Itching on the back of the feet is considered as follows: 1. Eczema due to allergies, which requires oral administration of levocetirizine hydrochloride capsules, or loratadine citrate capsules in the treatment. Topical hydrocortisone butyrate ointment, or fluticasone propionate ointment. 2. Tinea pedis due to fungal infection, which mostly presents with erythema, papules, desquamation, blisters, and is accompanied by itching. In laboratory tests for fungi, a positive fungal assay can occur, and treatment requires topical terbinafine hydrochloride gel or naftifine ketoconazole ointment for treatment. In both cases, it is necessary to avoid alcohol, spicy and stimulating diet such as raw onion, raw garlic, strong tea and coffee, as well as beef, mutton and seafood during the treatment period.