Why You Might Be Missing Co-Occurring OCD and Eating Disorder Symptoms in Teens

How to Recognize Overlapping Behaviors + A Case Study and Screening Tools to Help
Eating disorders (ED’s) and Obsessive-Compulsive Disorder (OCD) are both serious mental health conditions that commonly emerge during adolescence that can often co-occur in complex ways. Yet in clinical practice, the overlap between these two disorders is frequently missed, especially when food-related rituals and rigid behaviors are assumed to be purely eating disorder-driven.
At Thrive Wellness, we regularly work with teens whose symptoms straddle both diagnoses. These co-occurring cases require nuanced assessment and treatment, because without identifying both conditions, you can’t treat the whole person. Without a co-occurring diagnosis, critical aspects of treatment can be overlooked.
A Case Study: When OCD Masquerades as an Eating Disorder
Consider Sophie, a 15-year-old referred for restrictive eating and significant weight loss. She described fear around eating certain foods, but when asked why, she didn’t reference calories or concern about her body image. Instead, she spoke about being terrified of “getting sick” and her food and utensils being “contaminated.”
Further exploration revealed that Sophie has developed elaborate handwashing routines before meals and avoided any utensils that weren’t thoroughly cleaned several times. Her avoidance of food was not due to a desire to lose weight but was driven by extreme fears of illness, obsessive thoughts about contamination, and compulsive checking, hallmark symptoms of OCD.
Had these behaviors been interpreted only through the lens of eating disorders, Sophie’s OCD could have gone untreated, potentially stalling her recovery and increasing her long-term distress.
Why Co-Occurring Symptoms Are Easy to Miss
The challenge with these types of cases is that ED and OCD symptoms can look strikingly similar: rituals, rigidity, avoidance, and overwhelming distress. But the motivation behind the behaviors is often different.
- OCD-driven rituals can center on a vast variety of fears about nearly anything, not just weight or food.
- Eating disorder-driven behaviors are often aimed at weight loss, control, or managing body image distress.
When these disorders overlap, symptoms can reinforce each other, making treatment more difficult unless both are recognized and addressed.
What to Watch For in Your Teen Clients
To better identify when OCD may be co-occurring with an eating disorder, look for:
- Avoidance of food due to non-weight-related fears (e.g., contamination, getting sick, choking)
- Excessive rituals that go beyond typical eating disorder symptoms (e.g., cleaning utensils multiple times, checking expiration dates repeatedly)
- Distress when routines aren’t followed, even when weight or body image aren’t involved
- Perfectionism or control that extends into non-food-related areas (e.g., schoolwork, personal hygiene, social interactions)
Tools to Help You Screen and Support
To help providers like you better assess for co-occurring OCD and ED symptoms gain clarity on your clients’ conditions, we’ve created a webpage where you can access free screening tools to use at any time. This quick checklist can help flag behaviors and beliefs that warrant a deeper look.
- Access our Screening Tools
- Register for Our Summer CE Series — Learn more about treating eating disorders in adolescents and how symptoms can present
- Refer a Patient or Schedule a Provider Consult — Our team is available for case consults and referrals
Thrive Wellness: Integrated Treatment for OCD and Eating Disorders
We offer evidence-based, integrated care for teens facing OCD and eating disorders. Our team includes licensed therapists, dietitians, medical providers, and specialists trained in ERP (Exposure and Response Prevention), DBT (Dialectical Behavior Therapy), and nutritional rehabilitation.
We understand that healing isn’t linear, especially when two complex conditions are at play. We embrace personalized, collaborative care with other community providers to ensure no aspect of a teen’s mental health is overlooked.

