Dronabinol in Trichotillomania and Other Body Focused Repetitive Behaviors

Inclusion Criteria: * current DSM-5 trichotillomania * ability to understand and sign the consent form Exclusion Criteria: * Unstable Medical illness based on history of clinically significant abnormalities on baseline physical examination * Current pregnancy or lactation, or inadequate contraception in women of childbearing potential * Subjects considered an immediate suicide risk based on the Columbia Suicide Severity Rating Scale (C-SSRS) (www.cssrs.columbia.edu/docs) * Past 12-month DSM-5 psychiatric disorder other than trichotillomania * Illegal substance use based on urine toxicology screening * Use of any other psychotropic medication (except a PRN hypnotic) * Previous treatment with dronabinol * Cognitive impairment that interferes with the capacity to understand and self administer medication or provide written informed consent