It is not known exactly why people develop OCD. There are rare research reports that OCD may develop subsequent to another general medical problem, such as a brain injury, carbon monoxide poisoning, Parkinson's disease, or drug abuse.[1] However, these observations do not prove an association between these medical problems and OCD. Common stressful events such as financial or housing problems do not cause OCD, but they can make OCD symptoms worse.[1][2]
OCD is thought to have a genetic link; it is more common in identical twins than in fraternal twins, and is more common in close relatives of afflicted patients.[3] Studies suggest that at least one chemical messenger in the brain, serotonin, may be associated with OCD.[4][5][6]
"I don't know what caused my OCD to start, but it progressed so fast and began to affect every aspect of my life that I needed to seek help. When I was little and I had these tendencies, people thought it was 'cute' — but either they didn't see my inner struggle, or they didn't want to see it.
I'm not sure what caused my OCD, but in all honestly I'm not sure I would want my OCD to be cured 100% because this is what keeps me in control of myself and feel less anxious."
- Amanda O.
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