Sweat patches, i.e., lichen planus and lichen planus furfur, and its treatment includes general treatment, local medication and systemic medication. 1. General treatment: patients should take bath diligently, and underwear should be boiled and sterilized. 2. Local drug treatment: antifungal drugs can be applied, such as clotrimazole cream, compound razosin rub, miconazole cream, bifonazole solution and so on. Ketoconazole lotion, selenium disulfide solution, sodium thiosulfate solution is also effective for external use. 3. Systematic drug treatment: for patients with large area or recurrent attacks, they can take oral antifungal drugs, such as fluconazole, itraconazole and so on. Patients with lichen planus should not use medication on their own, and should go to the hospital in time, and standardize the treatment under the guidance of the doctor.