By Tori Rodriguez — 2012
Obsessive-compulsive disorder (OCD) is usually treated as a stand-alone mental illness. A growing body of research is now finding that some cases of OCD may stem from trauma.
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Post-traumatic stress disorder can happen to a person after experiencing a traumatic event that has caused them to feel fearful, shocked, or helpless. It can have long-term effects, including flashbacks, difficulty sleeping, and anxiety.