Dementia

(de-men’ ’ -she ah) {de, away from; mens, mind]. A form of insanity characterized bya deterioration or lo of the intellectual faculties, the reasoning power, the memory, and the will. D., Paralytic, general paralysis of the insane. D., Primary, that occurring independently of other forms of insanity. D., Secondary, that following another form of insanity. D., Senile, that due to the degenerations of old age. D., Terminal, that coming on toward the end of other forms of insanity or certain nervous diseases. 222