Distinguishing Between Obsessive-Compulsive Disorder and Anxiety

Diagnostic Criteria

The American Psychiatric Association recommends assessing the nature of thoughts, including whether they are recurrent, persistent, intrusive, and experienced as unwanted and anxiety-provoking, to distinguish between OCD and anxiety 1.
The International OCD Foundation suggests evaluating for compulsions, including repetitive behaviors or mental acts, in response to obsessive thoughts, to diagnose OCD 1, 3.
The presence or absence of compulsions is the key differentiator between OCD and anxiety, according to the National Institute of Mental Health 1, 2.

Patients with OCD often exhibit the "harm-related" or "unacceptability" symptom dimension, characterized by intrusive thoughts about having harmed others and mental rituals to neutralize obsessive fears, as noted by the National Alliance on Mental Illness 4, 1.
In contrast, patients with anxiety disorders typically show worries about relationships and social acceptance that feel like genuine concerns, without rigid, repetitive compulsive rituals, as stated by the Anxiety and Depression Association of America 2, 3.

The Yale-Brown Obsessive Compulsive Scale (Y-BOCS) can quantify OCD severity, with scores ≥14 indicating clinically significant OCD requiring treatment, according to the International OCD Foundation 3, 2.
The Structured Clinical Interview for DSM-5 (SCID-5) or Anxiety Disorders Interview Schedule for DSM-5 (ADIS-5) can confirm diagnosis, as recommended by the American Psychiatric Association 2.
Cognitive Behavioral Therapy with Exposure and Response Prevention (ERP) is a first-line treatment for OCD, as suggested by the National Institute of Mental Health 3.
SSRIs, such as sertraline, may be considered as first-line pharmacotherapy for moderate-to-severe OCD symptoms, as noted by the American Psychiatric Association 3.