Tinea pedis, also known as tinea cruris, is commonly treated with medication, including antifungal drugs and benzoyl peroxide. 1. Anti-fungal drugs: Generally, topical anti-fungal preparation is the main one, this kind of drugs has better treatment effect on lichen planus, and it is also a kind of commonly used therapeutic drugs, such as clotrimazole cream, ketoconazole cream and so on. The common side effects are discomfort or irritation at the site of application. For those who are not satisfied with the efficacy of topical antifungal drugs, oral antifungal drugs such as itraconazole and fluconazole can be used. 2. Benzoyl peroxide drugs: the more common of these drugs is benzoyl peroxide gel, which can be used to treat lichen planus. Common side effects are contact dermatitis or dryness at the site of application. It should be noted that when patients find that they suffer from lichen planus, it is recommended that they go to the dermatology department of the hospital in time and follow the doctor’s instructions, and it is not recommended to use the drugs on their own, so as to avoid delaying the condition or having adverse reactions.