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Drugs and diseases reference index

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Medical Dictionary Definitions A-Z List

Medical Dictionary Definitions A - Z - «R»:

  1. Rh factor Rh factor
    Rh factor: An antigen found in the red blood cells of most people: those who have Rh factor are said to be Rh positive (Rh+), while those who do not are Rh negative (Rh-) Blood used in transfusions much match donors for Rh status as well as for ABO blood group, as Rh- patients will develop anem...
  2. Rh incompatibility Rh incompatibility
    Rh incompatibility: The difference in Rh blood group types between an Rh negative mother and her Rh positive baby that leads to hemolytic disease of the newborn. The mother and baby's Rh blood group types are therefore said to be "incompatible." The red blood cells of an Rh+ (Rh positive) fetus ma...
  3. Rhabdomyolysis Rhabdomyolysis
    Fat-Fighting Foods Take the Quiz: The Human Body Causes of Fatigue Slideshow Pictures ...
  4. Rhabdomyosarcoma Rhabdomyosarcoma
    Rhabdomyosarcoma: A malignant tumor that starts in muscle. Rhabdomyosarcoma is primarily a childhood tumor and occurs most often in children under 5 years of age. Over 60% of cases show up before age 10. On rare occasions, rhabdomyosarcoma affects adults. Rhabdomyosarcoma can begin anywhere there...
  5. Rheumatic fever Rheumatic fever
    Rheumatic fever: An illness that occurs following a streptococcus infection (such as a "strep throat") or scarlet fever and predominantly affects children. Symptoms include fever, pain in the joints, nausea, stomach cramps, and vomiting. Rheumatic fever can cause long-lasting effects in the skin, j...
  6. Rheumatic heart disease Rheumatic heart disease
    Rheumatic heart disease: Heart damage caused by rheumatic fever. Treatment is by preventing reinfection with strep and by treating with heart drugs as needed....
  7. Rheumatism Rheumatism
    Rheumatism: Rheumatism is an older term, used to describe any of a number of painful conditions of muscles, tendons, joints, and bones. Rheumatism conditions have been classified as either localized, regional, or generalized. Localized rheumatism conditions include bursitis and tendinitis. R...
  8. Rheumatism, generalized Rheumatism, generalized
    Rheumatism, generalized: Rheumatism affecting many and diverse parts of the body, such as fibromyalgia....
  9. Rheumatism, localized Rheumatism, localized
    Rheumatism, localized: Rheumatism confined to a specific location, such as bursitis and tendonitis....
  10. Rheumatism, psychogenic Rheumatism, psychogenic
    Rheumatism, psychogenic: Rheumatism in which the patient reports inconsistent pains of muscles and joints that do not correspond to true anatomy and physiology. The patient is felt to have underlying psychological causes for these symptoms....
  11. Rheumatoid arthritis Rheumatoid arthritis
    Rheumatoid arthritis: An autoimmune disease which causes chronic inflammation of the joints, the tissue around the joints, as well as other organs in the body. Autoimmune diseases occur when the body tissues are mistakenly attacked by its own immune system. The immune system is a complex organizati...
  12. Rheumatoid arthritis, systemic-onset juvenile Rheumatoid arthritis, systemic-onset juvenile
    Rheumatoid arthritis, systemic-onset juvenile: See: Arthritis, systemic-onset juvenile rheumatoid....
  13. Rheumatoid factor Rheumatoid factor
    Rheumatoid factor: Rheumatoid factor is an abnormal antibody that is measurable in the blood. Rheumatoid factor is commonly used as a blood test for the diagnosis of rheumatoid arthritis. Rheumatoid factor is present in about 80% of adults (but a much lower proportion of children) with rheumatoid a...
  14. Rheumatoid nodules Rheumatoid nodules
    Rheumatoid nodules: Rheumatoid nodules are firm lumps in the skin of patients with rheumatoid arthritis that usually occur in pressure points of the body, most commonly the elbows ...
  15. Rheumatoid spondylitis Rheumatoid spondylitis
    Rheumatoid spondylitis: See: Ankylosing spondylitis....