Introducing a new series: evidence-based decision-making.

A patient comes to your office with repeated unwanted and intrusive thoughts that prevent her from conducting her daily life activities and that make her anxious. You apply a simple screening and conclude that she may have an obsessive-compulsive disorder. The work-up rules out other less frequent causes of similar manifestations and a more formal diagnostic interview confirms your clinical suspicion. What are the best treatment options you can offer your patient and how successful are they?