Medical Dictionary Definitions A-Z List
Medical Dictionary Definitions A - Z - «C»:
CHARGE syndrome: See: CHARGE association....
Charles Bell: See: Bell, Charles....
Charles D. Kelman
Charles D. Kelman: See: Phacoemulsification....
Charles Darwin: See: Darwin, Charles....
Charley horse: A cramp in a muscle in the leg, usually caused by a strain or injury. A charley horse can last anywhere from a few seconds to a quarter of an hour, and occasionally longer. It is not uncommon for one to recur repeatedly before it finally goes away. The term "charley horse" is generall...
Chart, Snellen's: The familiar eye chart used to measure how well you see at various distances.
Snellen's chart is imprinted with block letters that line-by-line decrease in size, corresponding to the distance at which that line of letters is normally visible.
The letters on Snellen's chart are, ...
Chasing the dragon
Chasing the dragon: A practice of heroin use involving
heating heroin and then inhaling it. Some heroin users have gone to
this practice because they believe erroneously that it will protect
them against contracting HIV and other diseases associated with
"Chasing the dragon" ca...
CHD: Congenital heart disease, a malformation of the heart or the large blood vessels near the heart. The term "congenital" speaks only to time, not to causation; it means "born with" or "present at birth."
Congenital heart disease is the most frequent form of major bir...
Checkpoint: A surveillance system responsible for monitoring the proper completion of an event within a cell. Cells contain a number of such systems. When a checkpoint system detects the failure of an event, it signals and calls for the inhibition of events downstream to the failure. These surveilla...
Cheek: The side of the face forming the side wall of the mouth.
The cheek bone is part of the temporal bone of the skull that provides the prominence of the cheek.
The word "cheek" comes from the Middle English "cheke" meaning the fleshy part of the jaw or jowl....
Cheilitis: Inflammation of the lips or of a lip. Cheilitis can also be spelled chilitis.
Angular cheilitis is inflammation and fissuring radiating from the commissures (angles) of the mouth secondary to predisposing factors such as nutritional deficiencies, atopic dermatitis, or Candida albicans (ye...
Cheiroarthropathy: A syndrome of limited joint mobility that occurs in patients with diabetes. Cheiroarthropathy is characterized by thickening of the skin resulting in contracture of the fingers. Cheiroarthropathy causes such limited motion of the fingers that the affected individual is unable to e...
CHEK2: A gene on chromosome 22q that encodes a kinase enzyme and influences a person's susceptibility to breast cancer. A variant (allele) of CHEK2 that abolishes its kinase activity results in a 2-fold increase in the risk of breast cancer for women and a 10-fold increase in risk for men.
Chekhov: See: Chekhov, Anton....
Chekhov, Anton: (1860-1904) "Russia's most famous physician" and greatest dramatist. Anton Pavlovich Chekhov graduated from the Medical Faculty of Moscow University in 1884 and practiced medicine throughout much of his short remaining life. In 1890 Chekhov on his own undertook a medical census of th...