The World Health Organization ranks obsessive-compulsive disorder (OCD) as one of the 10 most handicapping conditions by lost income and decreased quality of life OCD occurs across all ages but most commonly presents in young people Shame often prevents people with OCD seeking help and causes delays in effective treatment Non-specialists should ask screening questions if OCD is suspected OCD is a treatable condition-children and adults should initially be offered cognitive behavioural therapy For moderate to severe OCD in children and adults, selective serotonin reuptake inhibitors may also be offered