Obsessive-Compulsive Disorder (OCD), classified under Obsessive-Compulsive and Related Disorders, is indicated by the symptoms presented. - A fear of contamination, a frequent obsession in OCD, is evident. - Compulsive hand washing, prolonged showering, and surface cleaning are performed to mitigate contamination-related anxiety. - The substantial time commitment to these compulsions (3-4 hours for showering and cleaning) highlights the disorder's distress and functional impairment.
Alternative Diagnoses Considered: - Depressive Disorders: While withdrawal and low motivation are present, the primary symptoms are more consistent with OCD. - Post-Traumatic Stress Disorder (PTSD): This diagnosis typically requires exposure to a traumatic event, which is not reported here. - Somatic Symptom Disorder: This disorder involves medically unexplained physical symptoms, which is inconsistent with the individual's fears and compulsions.