Definition of Schizoaffective disorder:

Schizoaffective disorder is a mental condition that causes both a loss of contact with reality (psychosis) and mood problems.

Causes, incidence, and risk factors:

The exact cause of schizoaffective disorder is unknown. Changes in genes and chemicals in the brain (neurotransmitters) may play a role.

Schizoaffective disorder is believed to be less common than schizophrenia and mood disorders. Women may have the condition more often than men.

Although mood disorders are somewhat common in children, schizophrenia is not. Therefore schizoaffective disorder tends to be rare in children.