Psychosis refers to a collection of symptoms that affect the mind, where there has been some loss of contact with reality.

Psychosis is a common symptom of Parkinson's disease. More than half of all patients will eventually develop some symptoms. We're not sure of the exact cause. But chemicals in the brain ...

While it has multiple characteristics and stages, psychosis is not a condition in and of itself, but rather a symptom or an experience. A psychotic episode can happen on its own, or be part of a ...