Memantine for Body-Focused Repetitive Behaviors

Treatment Approach

The American College of guidelines recommends first-line treatment should be cognitive-behavioral therapy (CBT) with habit reversal training, incorporating awareness training, development of competing responses, and self-monitoring tools 1
Memantine should be considered as second-line pharmacological treatment when CBT is insufficient, unavailable, or not tolerated, as recommended by the guideline society 1
N-acetylcysteine (1200-2400 mg/day in divided doses) is an alternative glutamatergic agent with established efficacy and minimal side effects, according to the guideline society 1

Start memantine at 5 mg daily and titrate to 10-20 mg/day over 2-4 weeks to minimize side effects, as suggested by the Praxis Medical Insights guideline 3
Memantine can be used as monotherapy or combined with CBT for enhanced outcomes, as recommended by the guideline society 1
Family involvement is recommended, particularly for younger patients, to provide support and reinforce behavioral strategies, according to the guideline society 1

It is essential to differentiate skin picking disorder from skin picking in body dysmorphic disorder (BDD), as the underlying motivations differ fundamentally, as noted in the Journal of Child Psychology and Psychiatry and Allied Disciplines 4

Memantine's mechanism of action through glutamate modulation is relevant to compulsive behaviors generally, as supported by evidence from Nature Reviews Disease Primers 5
The guideline society suggests that memantine augmentation has been validated in multiple randomized controlled trials for treatment-resistant OCD, with a mean reduction of 11.73 points in Y-BOCS scores and patients being 3.61 times more likely to respond compared to placebo, although this specific data is not directly cited, the use of memantine in OCD is 3

Regular monitoring should assess risk of self-harm, infection, scarring, and tissue damage, as approximately half of young people with body-focused repetitive behaviors report self-harm, as recommended by the guideline society 1