Body dysmorphic disorder is obsessive preoccupation with one or more perceived appearance defects that others find slight or imperceptible. The patient spends excessive time on appearance-related behaviors (mirror checking, grooming, skin picking, reassurance seeking) and experiences clinically significant distress and impairment.
Common areas of preoccupation: skin (perceived blemishes, scarring), hair (perceived thinning, asymmetry), facial features (nose, eyes, jaw), body shape, muscle definition (muscle dysmorphia subtype, more common in men). The perceived defect is typically minor or absent — but the distress and impairment are profound.
BDD is within the OCD spectrum based on phenomenology (obsessive thoughts, compulsive behaviors), neurobiology (overlapping circuits), and treatment response (SSRIs at high doses, CBT with exposure work). DSM-5 explicitly grouped BDD with OCD and related disorders.
Suicide risk is remarkably high — among the highest in psychiatry. Suicidal ideation occurs in 60-80% of BDD patients; suicide attempts in 25-30%; completed suicide rates substantially elevated. The combination of intense distress, social isolation, and ego-dystonic perception drives risk that is often underrecognized. Screen explicitly.
Cosmetic procedures are typically counterproductive — sometimes harmful. Patients are dissatisfied with cosmetic outcomes in BDD because the distorted perception persists, often migrating to a different "flaw." Multiple procedures don't address the underlying obsession and can worsen self-image. Cosmetic surgeons should screen for BDD; psychiatric treatment addresses the cause.
Treatment: SSRIs at high doses with longer trials than for depression (often 12-16 weeks at maximum dose before declaring inadequate response). Fluoxetine 80 mg, escitalopram 30 mg, sertraline 200 mg. Combined with CBT for BDD — addresses cognitive distortions, exposure to feared situations, behavioral experiments, mirror retraining.
Differential considerations: distinguish from eating disorders (BDD typically involves specific features, not body shape/weight per se — though muscle dysmorphia overlaps with eating disorders), from delusional disorder somatic type (BDD has some insight at baseline; can lose insight under stress — DSM-5 specifies "with absent/delusional insight"), from social anxiety (BDD's appearance focus is distinct).
When you encounter a patient with substantial distress and impairment related to perceived appearance defects others don't see, BDD is the diagnosis. The treatment is effective but underused. Screen for suicidality at every visit. Cosmetic procedures should be discouraged. The perception, not the appearance, is the problem.