Schizophrenia is any of a group of psychotic disorders characterized by deterioration of the personality, withdrawal from reality, hallucinations, delusions, social apathy, emotional instability, etc

Mania is a mental disorder characterized by great excitement and occasionally violent behavior. Wired, hypertensive, excessive enthusiasm.

Dementia is severe impairment or loss of intellectual capacity and personality integration, due to the loss of or damage to neurons in the brain. This patient here thinks she is an Indian.

Paranoia is a mental disorder characterized by systematized delusions and the projection of personal conflicts, which are ascribed to the supposed hostility of others.

Melancholy is a gloomy state of mind, especially when habitual or prolonged. In other words depression. Sober thoughtfulness.