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  1. Obsessive-compulsive disorder (OCD) - Symptoms and causes

  2. Obsessive–compulsive disorder - Wikipedia

  3. Obsessive-Compulsive Disorder - National Institute of Mental

  4. Psychiatry.org - What Is Obsessive-Compulsive Disorder?

  5. What is OCD? - Mind

  6. Overview - Obsessive compulsive disorder (OCD) - NHS

  7. All There Is To Know About OCD - International OCD Foundation

  8. OCD (Obsessive-Compulsive Disorder): Symptoms & Treatment

  9. Obsessive-compulsive disorder (OCD) - Mayo Clinic

  10. Obsessive-Compulsive Disorder | Psychology Today