IRCT20210208050292N1 IRCT 2021-04-02 Iran University of Medical Sciences Comparison of oral N-acetil cystein Vs oral Pentoxyphilline in patients with Lichen planopillaris Comparison of the efficacy, safety, satisfaction and tolerability of oral N-acetil cystein Vs oral Pentoxyphilline in patients with Lichen planopillaris: A randomized controled clinical trial; assessor and analysted blinder 2020-04-08 anticipated 30 Complete https://irct.ir/trial/55256 interventional Randomization: Randomized, Blinding: Double blinded, Placebo: Not used, Assignment: Parallel, Purpose: Treatment, Randomization description: A simple randomization method will be used to perform the randomization process. The patients will be divided into three groups using Cards or envelop shuffling method, Blinding description: All assessments and analyzes will be performed by blind people other than the main researchers. 3 Lichen planopilaris. Intervention group:The intervention groups in addition to the control treatment will be treated with pentoxifylline 400 mg twice daily and N-acetylcysteine ​​600 mg twice daily, respectively. LPPAI in each group at the beginning of the study, two months later and 4 months after the start of treatment and changes from baseline to the end of the study between all three groups were analyzed and evaluated. Response to treatment will be achieved if we have a 25 to 85% reduction in the LPPAI system.The control group will receive 0.05% topical clobetasol solution each night with at least 30 drops to the alopecia area.. No - There is not a plan to make this available Justification or reason for not sharing IPD is No more information