chorea

(ko-re’ah) (L.; Gr. χορεία dance]. St. Vitus’ dance: a convulsive nervous disease, with involuntary and irregular jerking movements; it is attended with irritability and depre ion, and with mental impairment. It occurs especially in early life, affecting girls more frequently than boys. It is often hereditary, and sometimes occurs in epidemics. automatic c., a disease characterized by the performance of actions which seem to be intentional, but which are really performed independently of the will in response to some impulse or external stimulus. ger on’s c., a disease characterized by vio- lent rhythmic spasms, but running a_ benign course. but to: ers’ C., an occupation neurosis observed in button makers. chronic c., a hereditary affection of adults marked by irregular movements, speech disturbances, and dementia; called also Huntington's c. c. cor’dis, chorea with great irregularity of the heart’s action. dancing c., saltatory chorea. degenerative c. Same as chronicc. diap tic c., the utterance of a peculiar cry in cases of painle tic. electric c., a variety with violent and sudden movements, progre ing, as a rule, from bad to worse, and often characterized by atrophy and muscular paralysis: called also Dubini's disease. epidemic c., dancing mania. c. fes’t:,. procursi’va, old names for ataxia with festination. fibri. c., fibrillary contractions of various muscles; para myoclonus. c. gravida’rum, chorea with symptoms similar to those of the ordinary form, seen in pregnancy. habit c., tic. hem i lateral c. See hemichorca. Henoch's c.. spasmodic tic. hereditary c. See chronic c. Huntington's c. See chronic c. hysteric c. Same asc. major. imitative c., a pseudo chorea, or hysteric affection; a kind of habit spasm due to imitation. c. ins a’niens, chorea with symptoms of insanity: chiefly seen in pregnant women. eal c. Same as diaphragmatic c. limp c., a condition in which chorea is a ociated with paralysis: called also ¢. moll is. ς. ma’jor, hysteria with continuous and somewhat regular oscillatory movements. malleatory c., rhythmic chorea in which the patient performs persistent movements of hammering. maniacal c., chorea insaniens. methodic c.,a variety in which the movements take place at regular intervals: called also rhythmic c. mimetic c., that which is caused by imitation. c. mi’nor, the ordinary chorea with comparatively moderate convulsive movements. Ο. moll is. Sec limp e. Morvan's c., fibrillary contractions of the muscles of the calves and posterior part of the thighs, sometimes extending to the trunk, but never affecting the neck and face. c. nu’tans, nodding spasm, or chorea with nodding head movements. one sided c. Same as hemic hore a. paralytic c., local clonic spasm a ociated with a paralysis. post hemiplegic c., a form which affects partially paralyzed muscles after hemiplegia; athetosis. pre hemiplegic c., choreic move- ments which may precede an attack of hem i- plegia. pro cursive c., paralysis agitans. Σ ic 6., hysteric chorea in which the patient performs persistent rhythmic movements. rotary c., hysteric chorea marked by rhythmic movements of the head or body. saltatory c., rhythmic chorea with dancing movements. school-made c., chorea from overstimulation at school. Schrétter’s c., diaphragmatic chorea. c. scrip to’rum, writer’s cramp. senile c. 1. An affection resembling chorea, coming on in old age. 2. Paralysis agitans. Syde ’s c., ordinary chorea; chorea minor. tice c. See tic.