OBSESSIVE COMPULSIVE DISORDER(OCD) Obsessive compulsive disorder is a mental health disorder that affects people of all ages and walks of life . It occurs when an individual gets caught in a cycle of obsessions and compulsions . It can be said that person with OCD are plagued by constant thoughts of fears that cause them to perform rituals or routines . The disturbing thoughts are called obsessions and rituals are called compulsions .