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No one knows what causes schizoaffective disorder, but genetic factors appear to play a role. Some researchers think schizoaffective disorder is caused by an imbalance of serotonin or dopamine, chemicals that brain cells use to signal to each other. Other factors that contribute to development of the disorder might include exposure in the womb to viruses or toxins, and complications at birth.
The cause is unknown, but we think it stems from a mixture of biological, genetic, and environmental factors.
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