Salicylic acid ointment for tinea cruris needs to be combined with other medications to be effective, and will take about 2-4 weeks to work. Due to the individual physique and different conditions, the effect time can not be generalized. Ringworm is a superficial fungal infection between the toes, on the soles of the feet, and on the lateral edges of the feet caused by dermatophytes (a class of fungi that mainly cause skin and appendage infections). Tinea treatment is based on antifungal medications, both topical and systemic oral. Salicylic acid ointment has keratolytic effect, especially suitable for keratinized tinea cruris, note the need for a full course of treatment, full dosage use, with other suitable antifungal topical drugs, so as to achieve therapeutic effect. If in the use of the process of hives and other allergic reactions or dizziness, headache toxic reaction, you need to stop the drug immediately, serious cases to the hospital in a timely manner. Tinea versicolor has many types, if you know the specific types and treatment recommendations, drug selection is recommended to go to the regular hospital to consult the relevant dermatologist.