56 Causes of Obsessive-Compulsive Disorder
Genetics
Similar to many other mental issues, family history can be a major predictor for whether you would develop an obsessive-compulsive disorder or not. This condition would run in families and pass down from generation to generation. So, if your family members, both close and distant relatives, suffer from this problem, then you might be at risk of developing the disorder. The risk can be higher for those who have first-degree relatives, such as siblings, children, or parents. People with an identical twin with this condition would have up to 80% of having obsessive-compulsive disorder. [5]
