Comprehensive Study Guide for the Treatment of Body Dysmorphic Disorder

Characterization and Clinical Features of Body Dysmorphic Disorder (BDD)

• Definition and Core Preoccupation: Body Dysmorphic Disorder (BDD) is defined by an excessive and often delusional preoccupation with an imagined or slight defect in one’s physical appearance.

• Functional Impact: The disorder is associated with high levels of functional impairment in social, academic, and occupational domains, compromised quality of life, and high rates of morbidity, including hospitalization.

• Suicidality: BDD is associated with significant rates of suicidal ideation and completion. The annual suicide rate in BDD patients is approximately $0.3\%$, which is roughly $45$ times higher than that of the general United States population when controlled for age, gender, and geography.

• Common Areas of Focus: Preoccupations most frequently involve the skin, hair, nose, eyes, or teeth. However, any body part can be a focus, including ears, hips, buttocks, bone structure, breasts, and genitals.

• Muscle Dysmorphia: This is a specific subtype of BDD where the primary concern is the belief that one's body is too small or insufficiently muscular.

• Shift in Concern: Patients typically average a preoccupation with $5-7$ body areas over the course of their illness, and the focus of these concerns can shift over time.

Case Illustration: Julia

• Patient Profile: Julia is a $24$-year-old Asian-American woman whose BDD symptoms began during puberty at age $13$.

• Primary Concerns: Coarse, wavy hair and her nose (described as a "lumpy mound").

• Rituals and Behaviors:

  • Combing hair for up to $1\,\text{hour}$ at a time, morning and night.

  • Spending hundreds of dollars on styling products.

  • Obsessive comparison of her features to others in social situations.

  • Frequent mirror checking and touching of the hair/nose to check for growth.

  • Covering her nose with hands or hair during social interactions.

• Cosmetic Interventions: Julia sought consultations from $12$ plastic surgeons and underwent $2$ rhinoplasty procedures by age $22$. The first resulted in regret ("I looked better before"), and the second was perceived as a failure that made her look worse.

• Avoidance and Camouflage: Before leaving the house, Julia engaged in a $2-3\,\text{hour}$ routine involving makeup, clothing, sunglasses, and hats. She avoided social situations, rarely returned phone calls, and preferred dim lighting and locations with few people.

Epidemiology and Barriers to Treatment

• Prevalence: BDD affects an estimated $0.7\%-2.4\%$ of the population.

• Onset: Typically occurs in early adolescence.

• Under-recognition: BDD remains largely under-reported and under-recognized. Factors include:

  • Secrecy and Shame: Patients feel embarrassed and fear being viewed as vain.

  • Poor Insight: Many believe their problem is purely physical, leading them to seek medical (dermatological/surgical) rather than psychiatric help.

  • Clinician Oversight: Assessment often fails to specifically query appearance concerns unless they are the primary reason for the visit.

• Nonpsychiatric Treatment Seeking: In a sample of $200$ BDD patients, $71\%$ sought and $64\%$ received nonpsychiatric medical treatment (e.g., surgery or dermatology).

Biological Etiology

• Neurochemistry:

  • Serotonin ($5\text{-HT}$): Research focuses heavily on serotonin dysfunction, supported by the selective response of BDD symptoms to high-dose Serotonin Reuptake Inhibitors (SRIs). Symptom exacerbation has been noted following the depletion of tryptophan (a $5\text{-HT}$ precursor).

  • Dopamine ($\text{DA}$): Abnormalities in dopaminergic circuitry are also proposed to contribute to dysregulated attention and mood.

• Neuroanatomy and Circuitry:

  • Hemispheric Imbalance: Evidence suggests a role for frontostriatal cortical circuitry dysfunction and right-hemisphere involvement in processing body image and emotions.

  • Imaging Data (fMRI/SPECT): Studies show that BDD patients utilize local, detail-oriented processing (left hemisphere) rather than global, holistic processing.

  • Visual Processing: BDD patients show aberrant processing of high spatial frequencies ($\text{HSF}$), used for details like eyes/lips, and hyper- or hypo-activity in visual regions when viewing their own vs. others' faces.

• Structural Findings: Some studies indicate a leftward shift in caudate asymmetry and greater overall white matter compared to healthy controls.

• Genetics: Between $5.8\%-8\%$ of patients report BDD in first-degree relatives. There is a possible link to the $\text{GABA A-}\gamma 2$ gene and the serotonin transporter promoter polymorphism ($\text{5-HTTPRL}$) short allele.

Psychological and Socio-environmental Factors

• Psychodynamic Theories: Postulate that BDD stems from unconscious conlicts or feelings of inferiority/guilt displaced onto body parts. For example, a concern with the nose might represent a more "palatable" representation of threatening body parts like the penis. There is no empirical support for these treatments.

• Cognitive-Behavioral Theories: Utilize a diathesis-stress model. Puberty involves hormonal and social stressors that may trigger symptoms in biologically predisposed individuals.

  • Selective Attention: Patients over-focus on small details (local processing) rather than the "configural whole."

  • Maladaptive Beliefs: Belief that self-worth is entirely dependent on appearance and that one must be "perfect" to be loved.

  • Negative Reinforcement: Rituals (grooming, checking) provided temporary relief from distress, reinforcing the behavior and precluding adaptive learning.

• Socio-environmental Factors: Western culture's emphasis on unattainable beauty standards exerts pressure. However, BDD is not exclusive to the West; it is reported across cultures with varying standards, suggesting culture influences the focus of the concern rather than causing the disorder itself.

Assessment Tools

• Body Dysmorphic Disorder Questionnaire ($\text{BDDQ}$): A brief self-report screening tool (not diagnostic).

• BDD Diagnostic Module ($\text{BDD-DM}$): A semistructured module based on $\text{DSM-IV}$ criteria; has high interrater reliability (kappa = $0.96$).

• Yale-Brown Obsessive Compulsive Scale Modified for BDD ($\text{BDD-YBOCS}$): The "gold standard" for measuring symptom severity and change. Scores range from $0-48$; a score of $\ge 20$ indicates moderate BDD.

• Body Dysmorphic Disorder Examination ($\text{BDDE}$): A $34$-item scale rating symptoms from $0-168$.

• BDD Symptom Scale ($\text{BDD-SS}$): Identifies clusters like checking, avoidance, and skin-picking.

• Brown Assessment of Beliefs Scale ($\text{BABS}$): Measures insight and delusionality from $0-24$. A total score $\ge 18$ typically indicates delusionality.

Cognitive-Behavioral Therapy (CBT) for BDD

• Structure: Comprehensive treatment usually lasts $18-22$ sessions. It involves modular approaches that can target specific behaviors like skin-picking.

• Phase 1: Assessment and Psychoeducation:

  • Collaboration on an agenda and homework (monitoring symptoms).

  • Explicit contract to refrain from cosmetic/surgical procedures during treatment.

  • Individualizing the CBT model to the patient's history and routine.

• Phase 2: Cognitive Restructuring:

  • Identifying distortions: Jumping to conclusions, mind-reading, and all-or-nothing thinking.

  • Evaluating rational responses to these distortions using thought records.

• Phase 3: Behavioral Strategies (ERP):

  • Exposure with Response Prevention ($\text{ERP}$): Gradually entering avoided, anxiety-provoking situations (e.g., going to a supermarket) without using camouflaging or checking rituals.

  • Behavioral Experiments: Testing hypotheses (e.g., "If I don't wear a hat, people will laugh") and recording actual outcomes.

• Phase 4: Mirror Retraining:

  • Learning to observe the body in objective, nonjudgmental terms rather than focusing on "hot spots."

  • Describing the entire body while avoiding ritualistic touching or negative labeling.

• Phase 5: Advanced Strategies and Relapse Prevention:

  • Downward Arrow Technique: Used to elicit core beliefs (e.g., "I am unlovable").

  • Cognitive Continuum: Evaluating beliefs on a scale from $0-100$ to develop more adaptive viewpoints.

  • Differentiating between a "lapse" (short-term) and a "relapse" (return of the full disorder).

Pharmacotherapy and Combined Treatment

• First-line Medication: Serotonin Reuptake Inhibitors ($\text{SRIs}$). No drugs are currently $\text{FDA}$-approved specifically for BDD, but they are the standard of care.

• Optimal Administration: High doses and long duration ($12-16\,\text{weeks}$) are required for an adequate trial.

• Key SRI Studies:

  • Clomipramine vs. Desipramine: Clomipramine was significantly more effective, highlighting the need for serotonin-specific treatment.

  • Fluoxetine: In a placebo-controlled trial, $53\%$ responded to fluoxetine vs. $18\%$ for placebo.

  • Fluvoxamine: Open-label trials showed a $63\%$ reduction in severity.

  • Citalopram/Escitalopram: Trials showed response rates around $73\%$.

• Insight and Delusions: Both delusional and nondelusional variants of BDD respond to $\text{SRI}$ treatment. Clomipramine was found to be especially effective for delusional patients.

• Augmentation: For non-responders, buspirone or switching to a different $\text{SRI}$ may be effective. $43\%$ of initial non-responders may respond to a second $\text{SRI}$ trial.

Classification and Comorbidity

• Comorbidity Rates:

  • Major Depressive Disorder ($82\%$)

  • Social Phobia ($38\%$)

  • OCD ($30\%$)

  • Substance Use Disorders ($36\%$)

• Differential Diagnosis:

  • OCD: Distinguished by content (BDD focuses strictly on appearance).

  • Eating Disorders: Anorexia involves concerns about thinness/weight, whereas BDD focuses on localized defects.

  • Hypochondriasis: Focuses on health/disease status (e.g., "This bump is cancer") rather than aesthetic social rejection ($\text{BDD}$).

  • Social Anxiety: While often comorbid, $\text{BDD}$ social avoidance is specifically linked to the fear of rejection based on the perceived physical flaw.

Considerations for Special Populations

• Adolescents: Identity formation and peer approval are central developmental challenges interrupted by BDD. Teens often spend $3-8\,\text{hours}$ on rituals, leading to school refusal and isolation.

• Ethnic Minorities and Cultural Variants:

  • Taijin Kyofusho (Japan): Phobia of offending others with one's body.

  • Koro/Suo Yang (Asia): Genital retraction syndrome characterized by the fear of the penis/breasts shrinking into the body.

  • Acculturation Stress: As seen in Julia's case, the pressure to fit into multiple cultures can exacerbate feelings of inadequacy and the desire to meet specific racialized beauty ideals.