Causes
The cause is unknown. OCD might be due to neurobiological, environmental, genetic, and psychological factors. An imbalance of serotonin (a brain chemical) may play a major role.
OCD is linked to other neurological disorders, including:
- Tourette syndrome
- Trichotillomania—the repeated urge to pull out scalp hair, eyelashes, eyebrows, or other body hair
- Body dysmorphic disorder—imaginary or exaggerated defects in appearance
- Eating disorders (such as bulimia or anorexia nervosa )
- Hypochondriasis
- Substance abuse
Risk Factors
A risk factor is something that increases your chance of getting a disease or condition. Risk factors include:
- Age: late adolescence, early adulthood
- Family members with a history of OCD
- Other anxiety disorders
- Depression
- Organic brain syndrome
- Schizophrenia
- Tourette syndrome
- Personality disorder
- Attention deficit disorder
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