paranoia — Psychiatry. a mental disorder characterized by systematized delusions and the projection of personal conflicts, which are ascribed to the supposed hostility of others, sometimes progressing to disturbances of consciousness and aggressive acts believed to be performed in self-defense or as a mission.
schizophrenia — Psychiatry.. Also called dementia praecox. a severe mental disorder characterized by some, but not necessarily all, of the following features: emotional blunting, intellectual deterioration, social isolation, disorganized speech and behavior, delusions, and hallucinations.
mental illness — any of the various forms of psychosis or severe neurosis.
mental disorder — any of the various forms of psychosis or severe neurosis.
personality disorder — any of a group of mental disorders characterized by deeply ingrained maladaptive patterns of behavior and personality style, which are usually recognizable as early as adolescence and are often lifelong in duration.
psychosis — a mental disorder characterized by symptoms, such as delusions or hallucinations, that indicate impaired contact with reality.
mental disease — any of the various forms of psychosis or severe neurosis.
