Itchy toe crevice is usually caused by tinea pedis, perspiration not good eczema, contact dermatitis, etc. You can follow the doctor’s instructions for general treatment, physical therapy, medication and other methods. 1. Ringworm of the foot: can also cause itching. It can be treated by keeping feet clean, dry and hygienic, changing shoes and socks frequently, ironing socks with boiling water and exposing them to the sun. At the same time, apply drugs such as miconazole cream and ketoconazole ointment externally, and take drugs such as itraconazole orally if necessary. 2. Bad sweating eczema: usually caused by skin fungal disease, hyperhidrosis and allergy to nickel, chromium and cobalt, can be applied externally with tretinoin urea ointment, mometasone furoate ointment and so on, and can also be subjected to ultraviolet light irradiation and other physical methods, to promote the healing of the lesions. 3. Contact dermatitis: allergic reaction caused by contact with certain allergenic substances (e.g. detergents, plant sap) can be manifested as foot rash with itching. At this time, it is necessary to avoid re-exposure to sensitizers and apply mometasone furoate ointment, tretinoin ointment under the guidance of the doctor for treatment, combined with oral antihistamine drugs such as loratadine. Itchy toe crevices need to go to the hospital in time to identify the cause and treat the symptoms. Need to use drugs under the guidance of doctors, do not blindly use drugs, in order to avoid adverse consequences.