Caloric Vestibular Stimulation for Modulation of Insight in Obsessive-Compulsive Spectrum Disorders

This study is testing whether caloric vestibular stimulation — briefly placing cool or warm water in the ear canal to activate the balance system — can temporarily help people with OCD and related disorders recognize their fears or concerns may be excessive. **You may be eligible if...** - You are between 18 and 65 years old - You have a primary diagnosis of OCD, body dysmorphic disorder, illness anxiety disorder, or somatic symptom disorder - You hold strongly held beliefs related to your condition - Your psychiatric medications (if any) have been stable recently **You may NOT be eligible if...** - You have a history of vertigo, ear surgery, or other conditions making the ear procedure risky - You are pregnant or nursing, or have had recent substance use problems Talk to your doctor to see if this trial is right for you.