Foot fungus and gray nails are diseases caused by fungal infections, which can be treated with topical medication and oral medication under the guidance of a doctor. 1. Foot fungus: foot fungus, also known as tinea pedis, is caused by fungal infections, mainly divided into blisters scaly type, hyperkeratosis type, impregnated vesicles type foot fungus. You can give topical antifungal drugs such as clotrimazole, ketoconazole, bifonazole, etc. under the guidance of a doctor, and oral antifungal drugs such as itraconazole, terbinafine, etc. are needed in serious cases. 2. Gray nails: gray nails are nail fungal disease, is a fungal invasion of the nail plate, nail bed formation of lesions. Clinical often used topical antifungal drugs, such as amorolfine rub, cyclopentanone nail coating, etc., at the same time oral antifungal drugs, such as terbinafine, itraconazole and so on. All of the above drugs can inhibit and kill the fungus, which can help improve the patient’s symptoms. Foot odor gray nails are fungal infection caused by the disease, it is recommended to go to the hospital for fungal microscopy, a clear diagnosis, under the guidance of the doctor with medication.