The cause of itchy sole of foot may be due to hyperhidrosis, tinea pedis, herpes sweat and other factors. 1. Hyperhidrosis: patients may have an increase in localized sweating on the soles of the feet, which may cause irritation to the local skin, resulting in itchy soles of the feet, whitening of the skin, erythema, and smelly feet. 2. Tinea pedis: If the patient has tinea pedis caused by dermatophyte infection, it may also cause the symptoms of itchy feet. 3. Sweat herpes: This is a blistering disease that occurs symmetrically on the hands and feet. Patients may develop sweat herpes due to contact with allergens, skin bacterial infections, and other factors, which in turn cause itchy feet. There may be other reasons for itchy feet, so you need to cooperate with the doctor to improve the relevant examination to determine the cause and then do targeted treatment and treatment.