Medical Dictionary Definitions A-Z List
Medical Dictionary Definitions A - Z - «P»:
Provigil: Brand name of the drug modafinil. See: Modafinil....
Proximal: Toward the beginning, the nearer of two (or more) items. For example, the proximal end of the femur is part of the hip joint, and the shoulder is proximal to the elbow. The opposite of proximal is distal.
For a more complete listing of terms used in medicine for spatial orientation, please...
Proximal myotonic myopathy
Proximal myotonic myopathy: See: Myotonic dystrophy type 2....
Proximal white subungual onychomycosis
Proximal white subungual onychomycosis: The rarest form of fungus infection of the finger or toenail. (Fungus infection of the finger or toenail is also called onychomycosis.) The infection begins in the nail fold (the portion of the nail opposite the tip of the finger).
Proximal white subungual on...
Proxy, health care
Proxy, health care: A health care proxy is one form
of advance medical directive. Advance medical directives pertain to
treatment preferences and the designation of a surrogate
decision-maker in the event that a person should become unable to
make medical decisions on their own behalf.
Prune belly syndrome
Prune belly syndrome: Partial or complete absence of the abdominal muscles so that the outlines of the intestines are visible through the thin, lax, protruding abdominal wall. The abdominal wall looks shrunken, shriveled and wrinkled like a prehistoric prune.
The prune belly syndrome probably occurs...
Pruritic: Itchy. A scab may be pruritic....
Pruritus: Itching. Pruritus can result from drug
allergy, kidney or liver disease, cancers, parasites, aging or dry
skin, contact skin
reaction, such as poison ivy, and for unknown reasons....
Pruritus ani: A medical name for itchiness of the anus. See Anal itching....
Prusiner: See: Prusiner, Stanley B.....
Prusiner, Stanley B.
Prusiner, Stanley B.: American neurologist (1942-) and winner of the Nobel Prize for the discovery of "prions - a new biological principle of infection."
Prusiner received his A.B. in chemistry in 1964 and his M.D. in 1968 from the University of Pennsylvania. Following his internship at the Univers...
PSA: Prostate specific antigen. A test for PSA may be used to screen for
cancer of the prostate and to monitor treatment of the disease.
PSA is a protein produced by the prostate gland. Although most PSA
is carried out of the body in semen, a very small amount escapes into
the blood stream. The...