Who develops psychosis? It is difficult to know the number of people who experience psychosis. Studies estimate that between 15 and 100 people out of 100,000 develop psychosis each year.

Psychosis often begins not with characteristic disturbances of the mind—delusions like paranoia or hallucinations—but with disturbances in the way we move our body. For researchers like ...

There were nearly 900 people involved, including 101 people with 22q11.2 deletion syndrome, some with psychosis and some without, and 120 with "psychosis of unknown origin." ...