Noun
any disease of the mind; the psychological state of someone who has emotional or behavioral problems serious enough to require psychiatric intervention
Source: WordNetExamples include formalization of judicial procedure in court, and establishing uniform criteria for diagnosing mental disease. Source: Internet
In any prosecution for an offense, it is an affirmative defence that when the defendant engaged in the proscribed conduct, he lacked criminal responsibility by reason of mental disease or defect. Source: Internet
It is as much a mental disease as acute mania—it has the same symptoms. Source: Internet
Note that his arms form the basis for those of Pittsburgh, Pennsylvania and the University of Pittsburgh Soon after his resignation a renewed attack of gout freed Chatham from the mental disease under which he had so long suffered. Source: Internet
However, bad judgment is not an indicator of mental disease. Source: Internet
They should all be sent to the middle east for corrective punishment, because Muslims, have their own very effective brand of cure for this mental disease. Source: Internet