asperger's syndrome a psychiatric disorder usually noted during early school years; characterized by impaired social relations and by repetitive patterns of behavior
anxiety disorder a cover term for a variety of mental disorders in which severe anxiety is a salient symptom
delirium a usually brief state of excitement and mental confusion often accompanied by hallucinations
delusional disorder any mental disorder in which delusions play a significant role
encopresis involuntary defecation not attributable to physical defects or illness
folie a deux the simultaneous occurrence of symptoms of a mental disorder (as delusions) in two persons who are closely related (as siblings or man and wife)
mental disorder -
Any of the various diseases affecting the mind onset by brain damage or genetics described in the International Statistical Classification of Diseases and Related Health Problems sections 290 through 319.