Medical Dictionary Definitions A-Z List
Medical Dictionary Definitions A - Z - «P»:
Pharmacy, compounding: A facility that both makes
and sells prescription drugs. A compounding pharmacy can
often concoct drug formulas that are specially tailored to
patients: for example, liquid versions of medications
normally available only in pill form, for patients who
cannot swallow pills...
Pharyngeal: Having to do with the throat (pharynx)....
Pharyngitis: Inflammation of the pharynx (the hollow tube in the back of the throat about 5 inches long that starts behind the nose and ends at the top of the trachea). Pharyngitis is popularly known as a sore throat.
Most sore throats are viral and will not respond to antibiotics. Bacterial causes ...
Pharyngoesophageal diverticulum: See: Zenker diverticulum....
Pharynx: The hollow tube about 5 inches long that starts behind
the nose and ends at the top of the trachea (windpipe) and esophagus (the tube that goes
to the stomach)....
Phase, resting: More appropriately called interphase.
The interval in the cell cycle between two cell divisions when the individual chromosomes
cannot be distinguished, interphase was once thought to be the resting phase but it is far
from a time of rest for the cell. It is the time when DNA is repl...
Phe: Phenylalanine. See also: Amino acid symbols....
Phen-Fen: The once-popular diet-drug combination of fenfluramine and phentermine that, amidst much media attention, was taken off the market because of concern for heart valve damage. See: Fenfluramine....
Phenocopy: 1. An environmental condition that imitates (copies) one produced by a gene. 2.The person who has an environmentally-produced condition that mimics one produced by a gene....
Phenol: 1. A poisonous corrosive compound obtained by the distillation of coal tar that, in dilute solution, is an antimicrobial agent. Also called carbolic acid. 2. A generic term for any compound similar in structure to phenol (an organic compound with one or more hydroxyl groups attached to an ar...
Phenolphthalein: A compound used as a laboratory reagent and acid-base indicator and also used in over-the-counter (OTC) laxative preparations.
Phenolphthalein may be a carcinogen (cancer-causing agent). Feeding of phenolphthalein caused cancer in multiple organs in multiple species of experimental...
Babinski phenomenon: A neurologic reflex that constitutes
an important medical examination based upon what the big toe does
when the sole of the foot is stroked. If the big toe goes up, that
may mean trouble.
The Babinski reflex is obtained by stimulating the external
portion (the outside) of th...
Phenomenon, knee: See: Knee jerk....
Phenomenon, phantom limb
Phenomenon, phantom limb: See Phantom limb syndrome....
Phenomenon, Raynaud's: A condition resulting in
discoloration of fingers and/or toes when a person is exposed to
changes in temperature (cold or hot) or emotional events.
The skin discoloration occurs because an abnormal spasm of the of Raynaud's phenomenon.
Raynaud's phenomenon occurs with a n...