What are intrusive thoughts really, and when do they signal Pure O & OCD? Obsessive compulsive disorder consists of obsessions and compulsions that interfere with daily life. In this interview, MedCircle host Kyle Kittleson and the world’s leading OCD expert, Dr. Jenny Yip discuss… What are intrusive thoughts & why do we have them in the first place? What are obsessions and obsessive behavior? What are compulsions and compulsive behavior? Can someone just have intrusive thoughts and not have compulsions? What is Pure O? What are mental compulsions? When does an intrusive thought signal OCD or Pure O?