adults presenting with OCD. Males have a higher risk for comorbidity with NDDs, SMIs, and certain anxiety disorders. Several phenomenologically similar comorbidities such as tic disorders, OCRDs, OCPD, anorexia nervosa, and panic disorder, may be missed in individuals with a severe OCD. This suggests a need to track not only diagnostic severity over time, but also symptom profiles, for a more definitive comorbidity assessment.