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What Causes Psychotic Disorders?

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What Causes Psychotic Disorders?

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The exact cause of psychotic disorders is not known, but researchers believe that many factors may play a role. Some psychotic disorders tend to run in families, suggesting that the tendency, or likelihood, to develop the disorder may be inherited. Environmental factors may also play a role in their development, including stress, drug abuse, and major life changes. In addition, people with certain psychotic disorders may have an imbalance of certain chemicals in the brain. They may be either very sensitive to or produce too much of a chemical called dopamine. Dopamine is a neurotransmitter, a substance that helps nerve cells in the brain send messages to each other. An imbalance of dopamine affects the way the brain reacts to certain stimuli, such as sounds, smells, and sights and can lead to hallucinations and delusions.

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