dementia

(de-men's hyah) [L. depriv. + mens, mind.] Insanity characterized by more or le complete abolition of the mental faculties of reason, memory, etc. acute' d., primary d. appercep'tive d., Weygandt's term for the end proce of dementia precox accompanied by extreme mental weakne , cataton'ic d., catatonia (2). chron'ic d., (1) secondary d.; (2) d. of unfavorable prognosis, cu'iable d., amentia, acute d. d. paralyt'ica, paralytic dementia, general paresis.* d. paranoi'des, a disease beginning in early life with paranoid symptoms and terminating in dementia, d. prae'cox [L. precocious], a disease characterized by progre ive mental weakne tending to dementia, occurring in adolescents or young adults, hebephren'ic d., the simple and more quiet form of d. praecox, beginning with marked irritability and psychasthenia, followed by a stage of moderate maniacal excitement, which is succeeded by complete dementia, pri'mary d., amentia, form of acute d. occurring usually in the young, and often of favorable prognosis, sec'ondary d., chronic d. following mania or melancholia, of unfavorable prognosis, se'nile d., progre ive mental deterioration with lo of memory, especially for recent events, and occasional intercurrent attacks of excitement, occurring in the aged, ter'minal d., secondary d. tox'ic d., d. occurring in the victim of a drug habit.