Ringworm on the back of the hands, or tinea versicolor, is a fungal infection caused mainly by dermatophytes infecting the skin of the hands. It can be treated with topical medications, oral medications, and life adjustments. 1. Topical medication: when suffering from ringworm, if the condition is relatively mild, under the guidance of a doctor, local application of terbinafine hydrochloride cream, ketoconazole ointment and other medication, can effectively inhibit the local dermatophytes, thus controlling the condition. 2. Oral medication: If the effect of local medication is not good, or the area of tinea versicolor is large, you can cooperate with the doctor to take oral itraconazole, terbinafine and other antifungal drugs. 3. Life adjustment: usually patients should pay attention to hand hygiene, keep the hands dry and clean, when the hands sweat a lot, can be used locally to inhibit sweating agent, so as to be able to achieve the role of preventing tinea cruris. The above medication should be used under the guidance of a doctor, avoid self-medication, in order to avoid adverse reactions. It is recommended that patients with tinea versicolor go to the hospital in time and follow the doctor’s instructions for standardized treatment.