N-Acetylcysteine (NAC) for Trichotillomania and Excoriation Disorder: An Overview.

Trichotillomania and excoriation/skin-picking disorder involve repetitive behaviors, such as hair pulling leading to hair loss or skin picking leading to skin lesions, that cause physical complications, significant mental distress, and functional impairment despite attempts to stop. Currently, no first-line pharmacological treatments are approved for these disorders, although glutamatergic agents, select antidepressants, and other medications have demonstrated some benefit. The therapeutic potential of N-acetylcysteine (NAC) is promising. NAC helps maintain glutamate homeostasis in the brain, thereby reducing compulsive and habitual behaviors. In addition, NAC is recognized as a low-risk, well-tolerated, and accessible dietary supplement with valuable therapeutic potential. Deficiencies in pharmacological protocols and lack of government controls place individuals at risk; therefore, health care providers are well positioned to provide reliable information and educate individuals to make informed decisions about their health.