Key Takeaways
- BDD focuses on perceived flaws in specific appearance features (nose shape, skin, symmetry), while eating disorders center on weight, body fat, and food-related behaviors.
- About 10 to 15 percent of people have both conditions at the same time, and treating only one while ignoring the other leads to incomplete recovery.
- Getting the correct diagnosis matters because each condition requires different therapy approaches—CBT-ERP for BDD and CBT-E for eating disorders.
- Key questions to ask yourself: Is your distress about a specific feature or about overall weight? Are your behaviors about hiding a flaw or controlling calories?
- A clinician experienced with both BDD and eating disorders can distinguish between them and create an integrated treatment plan when both are present.
Both body dysmorphic disorder (BDD) and eating disorders involve distress about appearance and body-related behaviors. Because of these similarities, they're sometimes confused or co-diagnosed. However, they are distinct conditions with different underlying concerns, different driving factors, and different treatment priorities.
Understanding the distinction is crucial for accurate diagnosis and effective treatment. This blog post clarifies the differences and explains when and why these conditions can co-occur.
Core Difference: What the Preoccupation Is About
The fundamental distinction:
BDD:
- Preoccupation with perceived appearance flaws (nose shape, skin texture, facial asymmetry, muscularity, specific body parts)
- Often about features that are unnoticeable or minor to others
- Concern is about appearance in isolation ("My nose looks wrong")
Eating Disorder:
- Preoccupation with weight and body fat
- Concern is about body shape and size
- Driven by weight gain/loss fears ("I'll gain weight if I eat this")
Example to Illustrate
Sarah (BDD):
- Preoccupied with perceived facial asymmetry
- Obsessively checks mirrors to examine if one side of face is slightly larger
- Spends hours considering cosmetic surgery to fix asymmetry
- Weight is not the focus
- Eating pattern is normal; compensation is not about weight
Jamie (Eating Disorder):
- Preoccupied with weight and body shape
- Restricts food to prevent weight gain
- Exercises to burn calories burned by eating
- Weighs self daily; mood affected by number
- Food intake is the primary focus and control mechanism
Notice: These are fundamentally different concerns, even though both involve body distress.
Detailed Comparison: BDD vs. Eating Disorders
| Factor | BDD | Eating Disorder |
|---|---|---|
| Primary preoccupation | Appearance flaws in isolation | Weight and body fat |
| Typical focus areas | Face, specific features, muscularity, asymmetries | Overall body shape and size |
| Body weight concern | Usually not central focus | Central concern |
| Body checking behaviors | Mirror checking, body part measurement, photocheck | Weighing, trying on clothes, appearance checks |
| Compensatory behaviors | Camouflaging, seeking reassurance, surgical pursuit | Restriction, purging, excessive exercise |
| Motivation for behaviors | Manage appearance anxiety | Control weight/fat |
| If weight changes during treatment | Not primary treatment goal | Weight stabilization is treatment goal |
| Food relationship | Often normal eating (if no comorbid ED) | Restrictive or chaotic eating |
| Exercise purpose | May be excessive, but not primarily compensatory for eating | Often compensatory (calories burned for calories eaten) |
| Purging/restricting presence | Not typical unless comorbid ED | Common in many eating disorder types |
| Social withdrawal reason | Fear of judgment about appearance | Fear about eating or appearance related to weight |
| Comorbidity pattern | Often with OCD, anxiety, depression | Often with eating disorder-specific features |
| Treatment focus | Reducing appearance preoccupation; building life not based on appearance | Establishing normal eating; weight restoration if needed |
| Gold standard therapy | CBT-ERP (exposure and response prevention) | CBT-E (CBT for eating disorders) |
When BDD and Eating Disorders Co-Occur
Important: Some people have both BDD and an eating disorder simultaneously. This happens in approximately 10-15% of cases.
Why They Co-Occur
When both conditions are present:
- BDD involves appearance preoccupation beyond just weight
- Eating disorder involves weight/fat preoccupation with compensatory behaviors
- Both feed into each other
- Both involve body-focused anxiety and compulsions
Example: Alex (BDD + Eating Disorder)
- Has BDD focused on muscularity insufficiency
- Also has anorexia nervosa binge-purge type
- Obsessively exercises for muscle building (BDD)
- Restricts food to stay lean and reduce body fat (ED)
- Purges after binges (ED)
- Obsesses about muscle definition AND body fat percentage
- Multiple concerns need simultaneous treatment
Treatment Complexity
When BDD and eating disorder co-occur:
- Both need treatment: You can't ignore one to treat the other
- Treatment is more complex: Therapist must address both body image concerns and eating behaviors
- Medication approach same: SSRIs help both
- Therapy approach integrated: CBT-ERP and CBT-E elements combined
- Recovery takes longer: Typically 9-12+ months for full recovery
Why both matter:
- Treating only eating disorder without addressing BDD leaves appearance preoccupation
- Treating only BDD without addressing eating disorder leaves compensatory eating behaviors
- Full recovery requires addressing both
Key Diagnostic Distinctions
DSM-5 Criteria Comparison
BDD Diagnostic Criteria:
- Preoccupation with perceived appearance defects (not observable or minor)
- Repetitive behaviors or mental acts (mirror checking, reassurance-seeking, camouflaging)
- Causes clinically significant distress or impairment
- Preoccupation not better explained by concerns with body fat or weight
Eating Disorder Diagnostic Criteria (e.g., Anorexia Nervosa):
- Restriction leading to significantly low body weight
- Intense fear of weight gain or persistent behaviors preventing weight gain
- Disturbance in way one experiences body weight or shape
- Severity based on current BMI
Notice: The distinction is clear—BDD involves appearance flaws; eating disorders involve weight/fat concern.
Why the Distinction Matters for Diagnosis
If someone has:
- Preoccupation with nose shape and facial symmetry (not weight)
- Mirror checking and reassurance-seeking (not weighing/restricting)
- No compensatory weight-loss behaviors
- No eating abnormality
Diagnosis: BDD (not eating disorder)
If someone has:
- Preoccupation with overall body shape and weight
- Caloric restriction or binge-purge to control weight
- Fear of weight gain
- Weighing self as primary checking behavior
Diagnosis: Eating disorder (not BDD)
If someone has both patterns: Diagnosis of both
Treatment Implications of Getting the Diagnosis Right
If Diagnosed Only with BDD (When Eating Disorder Also Present)
Problems:
- Treatment focuses on appearance without addressing eating behaviors
- Eating disorder progresses untreated
- Person may develop medical complications from ED
- Recovery incomplete
If Diagnosed Only with Eating Disorder (When BDD Also Present)
Problems:
- Treatment focuses on weight normalization without addressing appearance preoccupation
- BDD symptoms remain after weight is restored
- Person may feel "recovered" from ED but still preoccupied with appearance
- Relapse risk remains due to untreated BDD
If Diagnosed Correctly with Both
Benefits:
- Therapist knows to address both appearance preoccupation and eating behaviors
- Treatment plan integrated
- Medication approach informed by both conditions
- Recovery more complete and lasting
When to Suspect BDD (Not Just Eating Disorder)
You might have BDD (with or without eating disorder) if you:
- Focus on specific appearance features (not just overall weight/shape)
- Spend significant time mirror checking or seeking reassurance about appearance
- Seek or consider cosmetic procedures
- Hide specific body areas through camouflaging
- Experience intrusive thoughts about appearance specifically
- Have compulsive grooming or body checking behaviors
- Feel distress disproportionate to any observable appearance differences
When to Suspect Eating Disorder (Not Just BDD)
You might have an eating disorder (with or without BDD) if you:
- Restrict food intake intentionally
- Have fear of weight gain
- Weigh yourself regularly; mood affected by number
- Use compensatory behaviors (purging, laxatives, excessive exercise for food)
- Focus on body shape and size (not just specific features)
- Binges or loss of control with eating
- Significant functional impairment related to food and eating
Comorbidity Beyond BDD and Eating Disorders
Important: Both BDD and eating disorders often co-occur with other psychiatric conditions:
With BDD:
- OCD (obvious—BDD is OCD-spectrum)
- Anxiety disorders
- Depression
- Social anxiety
- ADHD
With eating disorders:
- Depression
- Anxiety disorders
- OCD
- Trauma/PTSD
- Substance use
Treatment: When comorbidities are present, they all need to be addressed.
Case Examples
Case 1: BDD Only
Jordan: 19-year-old male preoccupied with skin (mild acne scars he perceives as severe). Spends 2+ hours daily checking mirror, researching cosmetic dermatology. Avoids social situations. Has considered multiple procedures. Eats normally; no weight/fat preoccupation. Normal weight. No compensatory eating behaviors.
Diagnosis: Body dysmorphic disorder
Treatment focus: Reducing appearance preoccupation, mirror checking, reassurance-seeking; CBT-ERP; SSRI
Case 2: Eating Disorder Only
Taylor: 20-year-old female restricts food due to fear of weight gain. Weighs daily; mood affected by number. Exercises to compensate for eating. Focuses on body shape and fat distribution. Normal appearance by any objective measure, but perceives self as overweight. No specific appearance feature preoccupation.
Diagnosis: Anorexia nervosa, binge-eating/purging type (if bingeing) or restrictive type (if not)
Treatment focus: Addressing restriction, establishing regular eating, weight restoration, CBT-E; SSRI for comorbid depression/anxiety if present
Case 3: BDD + Eating Disorder
Casey: 22-year-old focused on muscularity (perceives self as too small despite being muscular). Also restricts food to stay "cut" (low body fat). Exercises excessively for muscle gain. Uses supplements/steroids. Obsesses about both muscularity AND body fat percentage. Weighs daily. Avoids social situations.
Diagnosis: Body dysmorphic disorder (muscle dysmorphia) + anorexia nervosa (restrictive type)
Treatment focus: Addressing both appearance preoccupation AND restriction; reducing excessive exercise; normalizing eating and body composition acceptance; CBT-ERP + CBT-E elements; SSRI at higher dose
Why Clinician Expertise Matters
Getting the correct diagnosis requires clinicians who understand:
- Eating disorders thoroughly
- BDD and OCD-spectrum conditions thoroughly
- How they differ
- How they co-occur
- When to diagnose one, both, or neither
Finding the right clinician:
- Ask about their experience with eating disorders AND BDD
- Ask about their diagnostic approach
- Ensure they're not just treating appearance concerns as eating disorder or vice versa
- Look for understanding of nuance and complexity
The Path to Accurate Assessment
At a thorough psychiatric evaluation:
You'll be asked specifically about:
- Weight preoccupation vs. specific appearance feature preoccupation
- Eating patterns and compensatory behaviors
- Weight gain/loss fears vs. appearance-specific fears
- Mirror checking vs. weighing and clothes checking
- Exercise motivation: muscle gain/aesthetics vs. weight/fat loss
- Whether both concerns exist simultaneously
From this information, accurate diagnosis can be made.
Getting Help
If you're struggling with body image concerns—whether you think it's BDD, eating disorder, or both—professional evaluation is essential.
Contact KwikPsych:
- Phone: 737-367-1230
- Address: 12335 Hymeadow Dr, Ste 450, Austin, TX 78750
- Telehealth: Available across Texas
Dr. Monika Thangada, MD provides comprehensive evaluation distinguishing BDD from eating disorders and can coordinate integrated treatment if both are present.
Insurance accepted: Aetna, BCBS, Cigna, UnitedHealthcare, Superior HealthPlan/Ambetter, Baylor Scott & White, Oscar, First Health Network, Optum, Medicare
Crisis support:
- If in crisis: Call 988 or 911
- National Alliance for Eating Disorders: 1-866-662-1235
Accurate diagnosis leads to effective treatment. Whether you have BDD, eating disorder, or both, professional support can help. Recovery is possible.