Oral Low-Dose Naltrexone in the Treatment of Lichen Planopilaris and Frontal Fibrosing Alopecia; an Uncontrolled Open-label Prospective Study

Oral naltrexone was initially FDA approved to treat opioid use disorder and alcohol dependence at doses from 50-100mg/day. At lower doses of 1-5mg/day, naltrexone has been used off-label with success in treatment of several dermatologic conditions including the scarring hair loss disease lichen planopilaris. A recent case series of four patients with lichen planopilaris and a subtype, frontal fibrosing alopecia, treated with oral low-dose naltrexone at 3mg daily showed reduction of itch, clinical evidence of inflammation of the scalp, and of disease progression. There were no reported adverse events.

Based on the promising evidence, we propose using low-dose naltrexone at a daily dose of 3mg to treat lichen planopilaris and frontal fibrosing alopecia. The patients would be continued on their other medications for these conditions. The study would be open-label, so all participants would receive the low-dose naltrexone. Patients would be seen at 0,3,6 and 12 months to monitor their progress.