Medical Dictionary Definitions A-Z List
Medical Dictionary Definitions A - Z - «P»:
Perrault syndrome: An extraordinary genetic syndrome that is inherited in an autosomal recessive manner and affects both males and females but with a dramatic difference. Affected males and females both have moderate to severe deafness but only affected females have gonadal dysgenesis. They have str...
Perry syndrome: A familial form of Parkinson disease together with depression, weight loss and central hypoventilation in which there is failure of the normal control by the central nervous system over breathing. Perry syndrome is inherited in an autosomal dominant manner....
Persantine thallium scan
Persantine thallium scan: A type of myocardial perfusion scan done to disclose any areas of the heart muscle that may not be getting enough blood to perfuse them properly.
Persantine (Dipyridamole) is a medication that dilates (widens) the coronary arteries. It produces an effect similar to what h...
Personality disorder: A disorder characterized by the chronic use of mechanisms of coping in an inappropriate, stereotyped, and maladaptive manner. Personality disorders are enduring and persistent styles of behavior and thought, not atypical episodes. The personality disorders encompass a group of ...
Personality disorder, borderline
Personality disorder, borderline: A serious mental illness characterized by pervasive instability in moods, interpersonal relationships, self-image, and behavior. This instability often disrupts family and work life, long-term planning, and the individual's sense of self-identity.
Perspiration: 1) The secretion of fluid by the sweat
(sudoriferous) glands. These small, tubular glands are situated
within the skin, as well as in the subcutaneous tissue under it. They
discharge their fluid through tiny openings in the surface of the
skin. Perspiration serves at least two purp...
Pertussis: Whooping cough, a communicable,
potentially deadly illness characterized by fits of coughing followed
by a noisy, "whooping" indrawn breath. It is caused by the bacteria
Bordetella pertussis. The illness is most likely to affect young
children, but sometimes appears in teenagers and a...
PERV: Acronym for the porcine endogenous retrovirus, a pig virus that splices into DNA. PERV belongs to the same class of viruses as the human immunodeficiency virus (HIV). Some of the concern about pig-to-human transplantation revolves around PERV....
Pes: Latin word meaning foot. ...
Pes cavus: Literally a hollow foot, pes cavus is a foot with too
high an arch....
Pes planum: Flat feet....
Pest (plague): An infectious disease due to a
bacteria called Yersinia pestis.
Y. pestis mainly infects rats and other rodents. Rodents are the
prime reservoir for the bacteria. Fleas function as the prime vectors
carrying the bacteria from one species to another. The fleas bite the
Pesthouse: A hospital where people suffering from infectious disease were once confined and sometimes treated. "I discovered the ruin of the pesthouse, a building where anyone with an illness who was passing through the western passages into the British Isles in the eighteenth and nineteenth centur...
Pesticide: A chemical used to control, repel, or destroy pests of any sort. There are scores of different types of pesticides which may act specifically, for example, as acaricides (against mites),
molluscacides (against snails and other mollusks),
Pestilence: The pestilence referred to the bubonic plague
and it now refers to any epidemic disease that is highly contagious,
infectious, virulent and devastating.
The plague was, a highly contagious, infectious, virulent,
devastating disease due to a bacteria called Yersinia pestis which