The most obvious symptom after the finger is infected by the fungus is the local itching, most common in the finger cracks, and accompanied by finger peeling, flaking symptoms, some patients can also appear blisters, and even localized ulceration, oozing, and even the phenomenon of erosion. When the fingernail is infected by the fungus, some manifestations of gray nails can also appear, such as nail thickening, gray color or even fall off, and the symptoms of onychomycosis can also appear. When the fungal infection is prolonged, there can also be obvious dryness, roughness and even thickening of the cuticle on the hands. The treatment is mainly based on some topical antifungal drugs, such as terbinafine hydrochloride ointment, fluconazole ointment and so on, and sometimes it is also necessary to take some oral antifungal drugs.