Obsessive-compulsive disorder (OCD) is characterized by multiple obsessions and compulsions. A 22 years old woman who had mental traumatic event started having laryngopharyngeal discomfort, short term mental disturbance, and urge of repetitive checking of home door, spelling, and calculations of simple arithmetic. There was no evidence of organic causes. The diagnosis of OCD was established by meeting DSM-V criteria, and cognitive behavioral therapy was started. We report this case since it is important to consider the possibility of OCD for patients with unexplained somatic symptoms as well as unusual behavioral symptoms.

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