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Use the A-Z list to browse more than 6,000 health-related topics in our library. Clicking on a term opens the definition and, in most cases, links to more information.
Topic Index
- + Rh Incompatibility
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- Rh Incompatibility
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Also Known As: "Blood Incompatibility, Fetal Maternal Blood Incompatibility"
A condition in which a pregnant woman with Rh-negative blood is exposed to Rh-positive blood cells (usually from the fetus). The Rh antibodies that develop in the mother can cross the placenta and destroy fetal red blood cells.
More Information on Rh Incompatibility: Pregnancy Basics
- + Rh Isoimmunization
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- Rh Isoimmunization
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"Rh Isoimmunization" is more commonly referred to as "Isoimmunization" in the medical community.
Isoimmunization
The development of antibodies directed at the red blood cells of another individual, like a fetus in the uterus. Occurs when the rhesus (Rh) type of the mother is different from that of the fetus.
More Information on Isoimmunization: Pregnancy Management
- + Rhabdoid Tumor
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- Rhabdoid Tumor
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A tumor of the central nervous system or kidney that usually occurs in children under age 2.
More Information on Rhabdoid Tumor: Pediatric Cancer
- + Rhabdomyolysis
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- Rhabdomyolysis
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A rare but potentially fatal condition in which muscle cells break down, releasing their contents into the bloodstream. It is a rare side effect of a class of cholesterol reducing drugs called statins.
More Information on Rhabdomyolysis: Heart Drug & Medication
- + Rhabdomyosarcoma
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- Rhabdomyosarcoma
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A type of sarcoma (cancer that develops in the soft tissues) that originates in the cells of a type of muscle called striated muscles. While rare, it is the most common soft tissue cancer in children.
More Information on Rhabdomyosarcoma: Pediatric Cancer
- + Rheumatic
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- Rheumatic
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Also Known As: "Rheumatism"
A term that describes an inflammatory condition (including rheumatoid arthritis) that results in pain, limitation of movement, and often destruction or erosion of the joints, muscles or ligaments.
More Information on Rheumatic: Arthritis
- + Rheumatic Diseases & Diabetes
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- Rheumatic Diseases & Diabetes
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Also Known As: "Rheumatoid Arthritis & Diabetes"
A diagnosis of diabetes may influence the treatment of rheumatic diseases such as rheumatoid arthritis. Rheumatic syndromes in diabetes may be cause by nerve damage, increased collagen deposits that limit joint function or other factors.
More Information on Rheumatic Diseases & Diabetes: Arthritis
- + Rheumatic Endocarditis
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- Rheumatic Endocarditis
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"Rheumatic Endocarditis" is more commonly referred to as "Endocarditis" in the medical community.
Endocarditis
Also Known As: "Bacterial Endocarditis, Acute Endocarditis, Valvular Endocarditis, Infective Endocarditis, Mural Endocarditis"
An inflammation (most often from an infection) in vulnerable areas of the endocardium -- the innermost layer of the heart's chambers and valves. It most commonly affects individuals with existing valvular heart diseases or defects.
More Information on Endocarditis: Heart Injuries & Infections
- + Rheumatic Fever
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- Rheumatic Fever
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Also Known As: "Rheumatic Heart Disease"
A disease that causes inflammation of tissue throughout the entire body, particularly in the heart, joints and central nervous system.
More Information on Rheumatic Fever: Heart Injuries & Infections
- + Rheumatic Heart Disease
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- Rheumatic Heart Disease
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A disease that causes inflammation of tissue throughout the entire body, particularly in the heart, joints and central nervous system.
More Information on Rheumatic Heart Disease: Heart Injuries & Infections
- + Rheumatic Joint Disease
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- Rheumatic Joint Disease
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Also Known As: "RA, Systemic Rheumatic Disease, Subacute Rheumatic Arthritis, Acute Rheumatic Arthritis, Rheumatoid Disease"
A chronic disease involving inflammation of the joints that can lead to damage, pain and a limitation of movement. There are three phases of the disease: inflammation, thickening and finally damage to the joint. Early treatment can lessen damage.
More Information on Rheumatic Joint Disease: Arthritis
- + Rheumatic Valve Disease
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- Rheumatic Valve Disease
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"Rheumatic Valve Disease" is more commonly referred to as "Valvular Heart Disease Basics" in the medical community.
Valvular Heart Disease Basics
Also Known As: "Heart Valve Disease, Valve Disease"
Any fault or abnormality of one or more of the heart's valves: the pulmonic, mitral, aortic or tricuspid. Valvular heart disease is characterized by stenosis (narrowing) and regurgitation (blood flow in the wrong direction between heart chambers).
More Information on Valvular Heart Disease Basics: Heart Valve
- + Rheumatism
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- Rheumatism
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A term that describes an inflammatory condition (including rheumatoid arthritis) that results in pain, limitation of movement, and often destruction or erosion of the joints, muscles or ligaments.
More Information on Rheumatism: Arthritis
- + Rheumatoid Arthritis
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- Rheumatoid Arthritis
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Also Known As: "RA, Systemic Rheumatic Disease, Rheumatoid Disease, Rheumatic Joint Disease, Subacute Rheumatic Arthritis, Acute Rheumatic Arthritis"
A chronic disease involving inflammation of the joints that can lead to damage, pain and a limitation of movement. There are three phases of the disease: inflammation, thickening and finally damage to the joint. Early treatment can lessen damage.
More Information on Rheumatoid Arthritis: Arthritis
- + Rheumatoid Arthritis & Diabetes
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- Rheumatoid Arthritis & Diabetes
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A diagnosis of diabetes may influence the treatment of rheumatic diseases such as rheumatoid arthritis. Rheumatic syndromes in diabetes may be cause by nerve damage, increased collagen deposits that limit joint function or other factors.
More Information on Rheumatoid Arthritis & Diabetes: Arthritis
- + Rheumatoid Arthritis & the Heart
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- Rheumatoid Arthritis & the Heart
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Also Known As: "Rheumatoid Carditis"
An autoimmune disease that causes chronic inflammation of the joints and the tissue surrounding joints. It can also cause inflammation of other body tissues, including the membranes surrounding the heart.
More Information on Rheumatoid Arthritis & the Heart: Heart Basics
- + Rheumatoid Carditis
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- Rheumatoid Carditis
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An autoimmune disease that causes chronic inflammation of the joints and the tissue surrounding joints. It can also cause inflammation of other body tissues, including the membranes surrounding the heart.
More Information on Rheumatoid Carditis: Heart Basics
- + Rheumatoid Disease
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- Rheumatoid Disease
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Also Known As: "RA, Systemic Rheumatic Disease, Rheumatic Joint Disease, Subacute Rheumatic Arthritis, Acute Rheumatic Arthritis"
A chronic disease involving inflammation of the joints that can lead to damage, pain and a limitation of movement. There are three phases of the disease: inflammation, thickening and finally damage to the joint. Early treatment can lessen damage.
More Information on Rheumatoid Disease: Arthritis
- + Rheumatoid Factor Test
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- Rheumatoid Factor Test
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Also Known As: "RF Test"
A blood test to detect the rheumatoid factor antibody in the blood. The antibody is not normally present and may indicate rheumatoid arthritis. The test may also be used in the diagnosis of other conditions.
More Information on Rheumatoid Factor Test: Pain Lab Tests
- + Rheumatoid Spondylitis
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- Rheumatoid Spondylitis
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"Rheumatoid Spondylitis" is more commonly referred to as "Ankylosing Spondylitis" in the medical community.
Ankylosing Spondylitis
Also Known As: "Ankylosis Spondylitis, Bamboo Spine, Marie Strümpell Spondylitis"
Chronic disease primarily affecting the spine, which may lead to stiffness of the back. The joints and ligaments that allow the back to move become inflamed, which eventually may cause them to fuse together.
More Information on Ankylosing Spondylitis: Arthritis
- + Rheumatologist
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- Rheumatologist
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Physician who specializes in the treatment of arthritis and other rheumatic diseases that may affect joints, muscles, bones, skin, and other tissues.
More Information on Rheumatologist: Arthritis
- + Rhinitis
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- Rhinitis
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Also Known As: "Infectious Rhinitis, Drug Induced Rhinitis, Vasomotor Rhinitis, Structural Rhinitis, Rhinitis Medicamentosa, Irritant Rhinitis, Hormonal Rhinitis, Eosinophilic Rhinitis"
Inflammation of the mucous membrane, which lines the nose. It may be caused by infection, allergies or a combination of both. Symptoms may include sneezing, itching, nasal congestion or runny nose.
More Information on Rhinitis: Nose & Throat
- + Rhinitis Medicamentosa
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- Rhinitis Medicamentosa
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Also Known As: "Infectious Rhinitis, Drug Induced Rhinitis, Vasomotor Rhinitis, Structural Rhinitis, Irritant Rhinitis, Hormonal Rhinitis, Eosinophilic Rhinitis"
Inflammation of the mucous membrane, which lines the nose. It may be caused by infection, allergies or a combination of both. Symptoms may include sneezing, itching, nasal congestion or runny nose.
More Information on Rhinitis Medicamentosa: Nose & Throat
- + Rhinophyma
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- Rhinophyma
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Large, bulbous, ruddy appearance of the nose found almost exclusively in men over age 40. It involves thickening of the nose skin and the presence of many oil glands. The cause - once falsely believed to be heavy alcohol use - is unknown.
More Information on Rhinophyma: Skin Discoloration
- + Rhinosinusitis
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- Rhinosinusitis
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Also Known As: "Subacute Rhinosinusitis, Noninfectious Rhinosinusitis, Acute Rhinosinusitis, Chronic Rhinosinusitis, Recurrent Acute Rhinosinusitis, Allergic Rhinosinusitis"
Inflammation of the paranasal sinuses that occurs with rhinitis. It often occurs in patients with non-seasonal allergies and in those with moderate to severe asthma, and may persist for a few weeks (acute) or much longer (chronic).
More Information on Rhinosinusitis: Nose & Throat
- + Rhinosinusitis
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- Rhinosinusitis
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"Rhinosinusitis" is more commonly referred to as "Sinusitis" in the medical community.
Sinusitis
Also Known As: "Irritant Sinusitis, Infectious Sinusitis, Acute Sinusitis, Sinus Infection, Chronic Sinusitis, Acute Rhinosinusitis, Allergic Rhinosinusitis, Recurrent Acute Rhinosinusitis, Subacute Rhinosinusitis, Chronic Rhinosinusitis, Noninfectious Rhinosinusitis"
Inflammation of the lining of the sinus cavities in the face. It can be caused by infection, irritants or allergies, and may be acute or chronic. Symptoms may include runny nose, headache, teeth sensitivity, nasal congestion and facial swelling.
More Information on Sinusitis: Nose & Throat
- + Rhizotomy
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- Rhizotomy
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Surgical procedure in which spinal nerve roots are cut to relieve intractable pain or to stop severe muscle spasms.
More Information on Rhizotomy: Pain Management
- + Rhumab E25 Antibody
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- Rhumab E25 Antibody
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"Rhumab E25 Antibody" is more commonly referred to as "Anti IgE Antibody" in the medical community.
Anti IgE Antibody
Also Known As: "Omalizumab, Monoclonal Anti IgE Antibody"
An injectable drug that reduces asthma and allergic reactions. The drug stops the release of histamine, which causes allergic reactions, by blocking antibodies (IgE) from binding with mast cells.
More Information on Anti IgE Antibody: Allergy & Asthma Drugs
- + Rhythm Disorder
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- Rhythm Disorder
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"Rhythm Disorder" is more commonly referred to as "Arrhythmia" in the medical community.
Arrhythmia
Also Known As: "Irregular Rhythm, Irregular Heartbeat, Cardiac Arrhythmia, Rhythm Disturbance, Irregular Heart Rhythm, Dysrhythmia"
An abnormal heartbeat resulting from any change, deviation or malfunction in the heart's electrical system. An arrhythmia may be abnormally fast (tachycardia) or abnormally slow (bradycardia), and some can be fatal (e.g., ventricular fibrillation).
More Information on Arrhythmia: Arrhythmia
- + Rhythm Disturbance
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- Rhythm Disturbance
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"Rhythm Disturbance" is more commonly referred to as "Arrhythmia" in the medical community.
Arrhythmia
Also Known As: "Irregular Rhythm, Irregular Heartbeat, Cardiac Arrhythmia, Irregular Heart Rhythm, Dysrhythmia, Rhythm Disorder"
An abnormal heartbeat resulting from any change, deviation or malfunction in the heart's electrical system. An arrhythmia may be abnormally fast (tachycardia) or abnormally slow (bradycardia), and some can be fatal (e.g., ventricular fibrillation).
More Information on Arrhythmia: Arrhythmia
- + Rhythm Method
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- Rhythm Method
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"Rhythm Method" is more commonly referred to as "Natural Family Planning" in the medical community.
Natural Family Planning
Method of contraception that uses periodic abstinence from sexual intercourse during the ovulation period of the menstrual cycle.
More Information on Natural Family Planning: Contraception
- + Rhythmol
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- Rhythmol
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A brand of antiarrhythmics, medications used to treat all types of irregular heart rhythms (arrhythmias) except an abnormally slow heartbeat. Some act directly on the heart to slow it down, and others act to restore a normal beating pattern.
More Information on Rhythmol: Heart Drug & Medication
- + Rhytidectomy
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- Rhytidectomy
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"Rhytidectomy" is more commonly referred to as "Facelift" in the medical community.
Facelift
A type of cosmetic surgery to remove wrinkles and other signs of aging from the face by pulling the skin back and removing excess tissue.
More Information on Facelift: Skin & Aging
- + Ribbing Type Multiple Epiphyseal Dysplasia
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- Ribbing Type Multiple Epiphyseal Dysplasia
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"Ribbing Type Multiple Epiphyseal Dysplasia" is more commonly referred to as "Epiphyseal Dysplasia" in the medical community.
Epiphyseal Dysplasia
Also Known As: "Fairbank Type Multiple Epiphyseal Dysplasia, Multiple Epiphyseal Dysplasia, MED"
A rare inherited disorder affecting the head of the long bones (epiphyses). It usually involves shortened bones in the legs, hands and feet. Common symptoms include pain, inflammation and stiffness in the joints, particularly of the legs and hips.
More Information on Epiphyseal Dysplasia: Bone Health
- + Riboflavin
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- Riboflavin
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"Riboflavin" is more commonly referred to as "Vitamin B2" in the medical community.
Vitamin B2
A B vitamin essential for growth and for the production of red blood cells. It also prevents skin lesions and weight loss. It is found primarily in milk, leafy vegetables, fresh meat and egg yolks.
More Information on Vitamin B2: Vitamins
- + Ribonucleic Acid
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- Ribonucleic Acid
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"Ribonucleic Acid" is more commonly referred to as "RNA" in the medical community.
RNA
Also Known As: "Heterogeneous Nuclear RNA, mRNA, hRNA, Transfer RNA, Polynucleotides, Messenger RNA, tRNA"
A substance similar to DNA that is found in every cell of the body. Its functions include protein synthesis and relaying genetic information. There are four main types: heterogeneous (hRNA), messenger (mRNA), transfer (tRNA) and ribosomal (rRNA).
- + Rice Allergy
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- Rice Allergy
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An increased sensitivity to rice, either when ingested or when inhaling its pollen. While rare, it is more common in adults than children and in countries where rice has a higher frequency in the diet (e.g., Japan).
More Information on Rice Allergy: Food Allergy & Intolerance
- + Rice Bodies
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- Rice Bodies
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Smooth, glistening ovoid particles that resemble grains of rice. They result from chronic inflammation and occur in joints and the sheaths of tendons and bursae.
More Information on Rice Bodies: Pain Basics
- + Rice Paddy Itch
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- Rice Paddy Itch
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"Rice Paddy Itch" is more commonly referred to as "Swimmer Itch" in the medical community.
Swimmer Itch
Also Known As: "Clam Digger Itch, Cercarial Dermatitis, Duckworms"
Itchy, patchy, red pinpoint skin rash that affects parts of the body that have been in water. Itching may begin within 48 hours and last up to a week before ceasing. It is usually caused by trematode parasites of aquatic/migrating birds.
More Information on Swimmer Itch: Dermatitis, Eczema & Hives
- + Ricin
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- Ricin
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Also Known As: "Ricin Toxin"
A poison made from castor beans that prevents body cells from making proteins. Accidental poisoning is very unlikely, but it is a potential bioweapon. The poison can be inhaled, ingested or injected and is often (but not always) fatal.
More Information on Ricin: Bioterror Related Diseases
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- + Ricin Toxin
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- Ricin Toxin
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A poison made from castor beans that prevents body cells from making proteins. Accidental poisoning is very unlikely, but it is a potential bioweapon. The poison can be inhaled, ingested or injected and is often (but not always) fatal.
More Information on Ricin Toxin: Bioterror Related Diseases
- + Rickets
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- Rickets
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A bone disease in children that results from vitamin D deficiency. Symptoms include large head, crooked spine and limbs, and swollen abdomen.
More Information on Rickets: Vitamins
- + Rickettsia Rickettsii Infection
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- Rickettsia Rickettsii Infection
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"Rickettsia Rickettsii Infection" is more commonly referred to as "Rocky Mountain Spotted Fever" in the medical community.
Rocky Mountain Spotted Fever
Also Known As: "RMSF"
A bacterial infection spread by the bite of a wood tick. It is characterized by spots on the skin, fever, loss of appetite, coughing, difficulty breathing and abdominal pain.
More Information on Rocky Mountain Spotted Fever: Cold & Flu Basics
- + Rickettsial Diseases
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- Rickettsial Diseases
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Any infectious disease caused by ticks or mites or body lice infected with rickettsial bacteria.
More Information on Rickettsial Diseases: Infectious Disease Basics
- + Rickettsialpox
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- Rickettsialpox
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An infectious disease caused by Rickettsia akari and transmitted by a mite that creates a rash resembling chickenpox. Medications are used to treat the illness, which usually clears within days.
More Information on Rickettsialpox: Infectious Disease Basics
- + Rifabutin
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- Rifabutin
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Also Known As: "Rifampin"
A class of antibiotics, medications that kill or slow the growth of harmful microorganisms, such as bacteria. They have no effect on viruses.
More Information on Rifabutin: Cold & Infections Medications
- + Rifampin
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- Rifampin
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Also Known As: "Rifabutin"
A class of antibiotics, medications that kill or slow the growth of harmful microorganisms, such as bacteria. They have no effect on viruses.
More Information on Rifampin: Cold & Infections Medications
- + Rifamycins
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- Rifamycins
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Also Known As: "Rifampin, Rifabutin"
A class of antibiotics, medications that kill or slow the growth of harmful microorganisms, such as bacteria. They have no effect on viruses.
More Information on Rifamycins: Cold & Infections Medications
- + Rift Valley Fever
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- Rift Valley Fever
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Also Known As: "RVF, Rift Valley Hemorrhagic Fever, Rift Valley Fever Virus Infection, Rift Valley Fever Virus, RVF Infection"
A disease of East African sheep and cattle caused by a bunyavirus (genus Phlebovirus) that is marked by fever and destructive hepatitis. It is transmitted to humans by mosquito bites or handling infected animals.
More Information on Rift Valley Fever: Tropical Disease
- + Rift Valley Fever Virus
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- Rift Valley Fever Virus
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Also Known As: "RVF, RVF Infection, Rift Valley Hemorrhagic Fever, Rift Valley Fever Virus Infection"
A disease of East African sheep and cattle caused by a bunyavirus (genus Phlebovirus) that is marked by fever and destructive hepatitis. It is transmitted to humans by mosquito bites or handling infected animals.
More Information on Rift Valley Fever Virus: Tropical Disease
- + Rift Valley Fever Virus Infection
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- Rift Valley Fever Virus Infection
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Also Known As: "RVF, Rift Valley Fever Virus, RVF Infection, Rift Valley Hemorrhagic Fever"
A disease of East African sheep and cattle caused by a bunyavirus (genus Phlebovirus) that is marked by fever and destructive hepatitis. It is transmitted to humans by mosquito bites or handling infected animals.
More Information on Rift Valley Fever Virus Infection: Tropical Disease
- + Rift Valley Hemorrhagic Fever
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- Rift Valley Hemorrhagic Fever
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Also Known As: "RVF, Rift Valley Fever Virus Infection, Rift Valley Fever Virus, RVF Infection"
A disease of East African sheep and cattle caused by a bunyavirus (genus Phlebovirus) that is marked by fever and destructive hepatitis. It is transmitted to humans by mosquito bites or handling infected animals.
More Information on Rift Valley Hemorrhagic Fever: Tropical Disease
- + Right Atrial Aneurysm
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- Right Atrial Aneurysm
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"Right Atrial Aneurysm" is more commonly referred to as "Atrial Aneurysm" in the medical community.
Atrial Aneurysm
Also Known As: "Atrial Septal Aneurysm, Aneurysm of Septum Secundum, Left Atrial Aneurysm, Aneurysm of Septum Primum"
Bulging of part of the wall of an atrium. When in the wall between atria, it is called atrial septal aneurysm or aneurysm of septum primum (or secundum). It is often congenital and has been linked to increased stroke risk and patent foramen ovale.
More Information on Atrial Aneurysm: Aneurysm
- + Right Atrioventricular Valve
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- Right Atrioventricular Valve
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"Right Atrioventricular Valve" is more commonly referred to as "Tricuspid Valve" in the medical community.
Tricuspid Valve
One of the heart's four valves. The tricuspid valve normally swings open to allow the smooth passage of blood from the right atrium to the right ventricle, then closes. Blood should flow only in one direction and only at the right time.
More Information on Tricuspid Valve: Heart Valve
- + Right Atrium
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- Right Atrium
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"Right Atrium" is more commonly referred to as "Atrium" in the medical community.
Atrium
Also Known As: "Left Atrium, Atria"
One of two upper chambers of the heart. Oxygen-poor blood travels from the right atrium to the right ventricle and out to the lungs. Oxygen-rich blood travels from the left atrium to the left ventricle and out to the body.
More Information on Atrium: Heart Basics
- + Right Bundle Branch Block
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- Right Bundle Branch Block
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Also Known As: "Partial Right Bundle Branch Block, RBBB, Incomplete Right Bundle Branch Block, Complete Right Bundle Branch Block"
An abnormal heart rhythm caused by delayed or blocked transmission of electrical impulses through the right bundle branch of the heart.
More Information on Right Bundle Branch Block: Arrhythmia
- + Right Hemicolectomy
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- Right Hemicolectomy
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"Right Hemicolectomy" is more commonly referred to as "Colectomy" in the medical community.
Colectomy
Also Known As: "Left Hemicolectomy, Bowel Resection, Open Colectomy, Partial Colectomy, Laparoscopic Colectomy, Sigmoid Colectomy, Hemicolectomy"
Surgical removal of all or part of the colon (large intestine). Partial colectomy may also be called hemicolectomy. It may be performed in a open procedure (one large incision) or through laparoscopy (uses a camera and several smaller incisions).
More Information on Colectomy: Digestive Treatments
- + Right Ventricle
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- Right Ventricle
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"Right Ventricle" is more commonly referred to as "Ventricle" in the medical community.
Ventricle
Also Known As: "Pumping Chamber, Left Ventricle"
One of two lower chambers of the heart. The right ventricle pumps oxygen-poor blood through the pulmonary artery and to the lungs. The left ventricle pumps oxygen-rich blood through the aorta and to the rest of the body.
More Information on Ventricle: Heart Basics
- + Right Ventricular Aneurysm
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- Right Ventricular Aneurysm
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"Right Ventricular Aneurysm" is more commonly referred to as "Ventricular Aneurysm" in the medical community.
Ventricular Aneurysm
Also Known As: "Septal Aneurysm, Heart Aneurysm, Ventricular Septal Aneurysm, Left Ventricular Aneurysm, Interventricular Aneurysm"
Bulging of part of the wall of a ventricle, usually the left. When in the wall between ventricles it is called ventricular septal aneurysm, interventricular aneurysm or septal aneurysm. It may be congenital or from trauma (e.g., heart attack).
More Information on Ventricular Aneurysm: Aneurysm
- + Right Ventricular Assist Device
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- Right Ventricular Assist Device
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"Right Ventricular Assist Device" is more commonly referred to as "Ventricular Assist Device" in the medical community.
Ventricular Assist Device
Also Known As: "Heart Assist Pump, Heart Pump, Left Ventricular Assist Device, RVAD, VAD, LVAD"
A device that helps either of the heart's lower chambers (ventricles) to pump blood. Some patients require one device to help each ventricle. These devices have been approved by the FDA and are fairly commonly used.
More Information on Ventricular Assist Device: Heart Failure
- + Right Ventricular Cardiomyopathy
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- Right Ventricular Cardiomyopathy
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"Right Ventricular Cardiomyopathy" is more commonly referred to as "ARVD" in the medical community.
ARVD
Also Known As: "Arrhythmogenic Right Ventricular Cardiomyopathy, Right Ventricular Dysplasia, Arrhythmogenic Right Ventricular Dysplasia"
A rare heart disease that is a leading cause of sudden cardiac death in athletes. ARVD runs in families and is present from birth, but it may not be detected until a serious cardiac event occurs. About 80 percent of cases are diagnosed after age 40.
More Information on ARVD: Heart Failure
- + Right Ventricular Dysplasia
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- Right Ventricular Dysplasia
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"Right Ventricular Dysplasia" is more commonly referred to as "ARVD" in the medical community.
ARVD
Also Known As: "Arrhythmogenic Right Ventricular Cardiomyopathy, Arrhythmogenic Right Ventricular Dysplasia, Right Ventricular Cardiomyopathy"
A rare heart disease that is a leading cause of sudden cardiac death in athletes. ARVD runs in families and is present from birth, but it may not be detected until a serious cardiac event occurs. About 80 percent of cases are diagnosed after age 40.
More Information on ARVD: Heart Failure
- + Right Ventricular Hypokinesis
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- Right Ventricular Hypokinesis
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"Right Ventricular Hypokinesis" is more commonly referred to as "Hypokinesis" in the medical community.
Hypokinesis
Also Known As: "Regional Hypokinesis, Hypokinesia, Left Ventricular Hypokinesis, Global Hypokinesis"
A condition in which either the left or right ventricle does not contract well. If "global" the entire ventricle is affected. If "regional" only part of the ventricle is affected.
More Information on Hypokinesis: Heart Failure
- + Right-Sided Heart Failure
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- Right-Sided Heart Failure
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"Right-Sided Heart Failure" is more commonly referred to as "Cor Pulmonale" in the medical community.
Cor Pulmonale
Heart failure or enlargement of the right ventricle (the lower-right chamber of the heart) that is caused by chronic bronchitis, pulmonary hypertension or other lung diseases. Living at high altitudes for long periods of time is also a risk factor.
More Information on Cor Pulmonale: Heart Failure
- + Right-to-Left Shunt
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- Right-to-Left Shunt
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"Right-to-Left Shunt" is more commonly referred to as "Shunt" in the medical community.
Shunt
Also Known As: "Left-to-Right Shunt, Arteriovenous Shunt, Cardiovascular Shunt"
A passage that redirects the flow of liquid (e.g., blood) from one route to another. These may occur naturally in the body, but the term usually refers to either an artificial shunt that has been surgically created or a birth defect of the heart.
More Information on Shunt: Pediatric Heart
- + Rigid Cystoscopy
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- Rigid Cystoscopy
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"Rigid Cystoscopy" is more commonly referred to as "Cystoscopy" in the medical community.
Cystoscopy
Also Known As: "Bladder Cystoscopy, Flexible Cystoscopy"
Examination of the bladder (muscular reservoir that holds urine) and urethra. Performed using a thin, lighted instrument called a cystoscope inserted into the urethra. Tissue samples may be removed during examination and analyzed microscopically.
More Information on Cystoscopy: Urinary & Bladder
- + Rigid Sigmoidoscopy
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- Rigid Sigmoidoscopy
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"Rigid Sigmoidoscopy" is more commonly referred to as "Sigmoidoscopy" in the medical community.
Sigmoidoscopy
Also Known As: "Flexible Sigmoidoscopy, Proctosigmoidoscopy"
A test used to detect polyps or other abnormalities in the rectum and the lower part of the colon. It uses a flexible or rigid tube with a light and camera (sigmoidoscope) that blows air to inflate the colon, making it easier to see problems.
More Information on Sigmoidoscopy: Digestive Imaging Tests
- + Rigidity
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- Rigidity
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Increased resistance to the passive movement of a limb.
More Information on Rigidity: Neuro Signs & Symptoms
- + Riley Day Syndrome
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- Riley Day Syndrome
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"Riley Day Syndrome" is more commonly referred to as "Dysautonomia" in the medical community.
Dysautonomia
Also Known As: "Autonomic Dysfunction, Familial Dysautonomia"
A disorder of autonomic nervous system (ANS) function. It can be local or generalized. It also can be acute and reversible or chronic and progressive. There is no cure, and severe cases can be fatal.
More Information on Dysautonomia: Brain & Nerve Basics
- + Ringworm
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- Ringworm
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Also Known As: "Tinea Circinata, Trichophyton Infection, Tinea Glabrosa, Tinea Corporis, Microsporum Infection"
Fungal infection in the form of a red, scaly, itchy patch or bump. It may affect the skin, nails or scalp. Infection sometimes resembles a ring or series of rings with raised, bumpy borders around a scaly center.
More Information on Ringworm: Skin Related Infections
- + Risedronate
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- Risedronate
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"Risedronate" is more commonly referred to as "Etidronate" in the medical community.
Etidronate
A type of bisphosphonates, medications that increase bone density and prevent bone breakdown. They are used in the treatment of osteoporosis and Paget's disease.
More Information on Etidronate: Pain Management
- + Risk Factor
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- Risk Factor
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Factors, both genetic and environmental, that help determine an individual's risk of developing or tendency to develop an illness.
- + Risk Factors and Women
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- Risk Factors and Women
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"Risk Factors and Women" is more commonly referred to as "Heart Disease Risk Factors & Women" in the medical community.
Heart Disease Risk Factors & Women
Also Known As: "Women and Heart Disease Risk Factors"
Women have some of the same risks for heart disease as men, such as smoking, obesity and high cholesterol levels. A woman's risk for heart disease increases after menopause.
More Information on Heart Disease Risk Factors & Women: Women's Heart
- + Risk Factors for Cancer
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- Risk Factors for Cancer
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Factors, both genetic and environmental, that help determine an individual's risk of developing or tendency to develop an illness. Risk factors for cancer include age, family history, medical history and lifestyle choices (e.g., smoking).
More Information on Risk Factors for Cancer: Cancer Risk Factors
- + Risk Factors for Diabetes
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- Risk Factors for Diabetes
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Also Known As: "Diabetes Risk Factors, Diabetic Risk Factors"
Anything that raises the chances of a person developing a disease. Risk factors for diabetes include age, family history, a history of gestational diabetes, weight, lack of exercise and ethnicity.
More Information on Risk Factors for Diabetes: Diabetes & Endocrine Risks
- + Risk Profile
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- Risk Profile
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"Risk Profile" is more commonly referred to as "Coronary Risk Profile" in the medical community.
Coronary Risk Profile
Also Known As: "Health Risk Appraisal, HRA, Coronary Profile"
A tool for measuring a person's chance of developing coronary artery disease in his or her lifetime. It includes genetic traits, blood pressure, cholesterol, weight, age, activity level and related conditions, such as diabetes.
More Information on Coronary Risk Profile: Heart Risk Factors
- + Risperidone
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- Risperidone
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"Risperidone" is more commonly referred to as "Clozapine" in the medical community.
Clozapine
Also Known As: "Ziprasidone, Aripiprazole, Olanzapine, Quetiapine, Sertindole"
A type of medication belonging to the drug class called atypical antipsychotics. It may be used in the treatment of schizophrenia and acute manic and mixed episodes associated with bipolar disorder
More Information on Clozapine: Psychiatric Medications
- + Ritchie Index
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- Ritchie Index
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A system for recording joint tenderness.
More Information on Ritchie Index: Pain Basics
- + Rituximab
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- Rituximab
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"Rituximab" is more commonly referred to as "Monoclonal Antibodies" in the medical community.
Monoclonal Antibodies
Also Known As: "Cetuximab, Apolizumab, Dacliximab, Trastuzumab, Bevacizumab, Alemtuzumab"
Any of a type of antibody made in the laboratory and designed to target specific substances called antigen
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