Fungal infections are a common clinical condition caused by ringworm that invades the skin’s keratin, such as ringworm of the hands and feet, ringworm of the body, ringworm of the head, and ringworm of the nails. Fungal infections can be completely cured, but fungal infections are related to the patient’s immunity, for example, patients with diabetes are prone to infection and may be re-infected after being cured. It can be cured with topical medications, such as topical naftifine ketoconazole cream, terbinafine hydrochloride cream, etc. The rash should be treated for at least 7-10 days after it subsides. For onychomycosis, most patients need to be treated with oral antifungal medications, such as itraconazole or terbinafine hydrochloride tablets, and the course of treatment takes about a few months.