DSM-5 Case Studies Practice Test 2026 – The Complete Guide to Mastering Clinical Diagnosis!

Obsessive-compulsive disorder is indicated when a person experiences recurrent, intrusive thoughts, urges, or images (obsessions) that cause significant distress, and to relieve that distress the person performs repetitive behaviors or mental acts (compulsions), which are aimed at preventing something bad or reducing anxiety. The key here is the link between the distress from the intrusive thoughts and the compulsive actions that the person feels compelled to perform, with these rituals taking up a substantial amount of time and impairing daily functioning. Obsessions are typically unwanted and recognized as excessive or unreasonable by the person, though they feel driven to act on them to gain relief.

Generalized anxiety disorder involves chronic worry across many domains rather than specific, ritualized behaviors tied to intrusive thoughts. Schizophrenia centers on psychotic symptoms such as delusions or disorganized thinking, not the patterned obsessions and compulsions described. Post-traumatic stress disorder features trauma-related reexperiencing, avoidance, and hyperarousal, not the core loop of obsessions with compulsions designed to neutralize distress.