Which of the following OCD carries worst prognosis to treatment?: (A) Pathological doubt, (B) Contamination, (C) Hoarding disorder, (D) Obsessive thought disorder
Answer is C. Hoarding disorder is characterized by acquiring and accumulating useless things attaching them with emotional importance.
Exposure and response prevention which is a standard treatment for OCD, is often found ineffective and hence it carries worst prognosis.