Skinned hands in summer may be caused by eczema, tinea cruris, herpes sweat, and exfoliative keratolysis. 1. Eczema: hand eczema is eczema is limited to the hands, considered to be related to endogenous and exogenous factors, such as family genetics, contact with allergens, living environment humidity, dietary factors. It leads to blisters, patches and scaly lesions on the palms, backs of hands or skin between fingers. 2. Ringworm: ringworm is caused by the infection of pathogenic bacteria such as Trichophyton rubrum, Trichophyton rubrum, plaster-like microsporidium and so on. Such as blister ringworm, preferred in the fingers, palm, resulting in localized deep in the blisters, blisters dry after the formation of desquamation, accompanied by obvious itching sensation. 3. Sweat herpes: the cause of sweat herpes is not yet completely clear, considered with genetic, environmental, disease, personal factors and so on. Herpes sweating occurs on the palms of the hands and soles of the feet, resulting in localized blisters, accompanied by pain, itching, and flaking after the blisters dry up. 4. Exfoliative Keratolysis: It occurs in the superficial stratum corneum of palm and metatarsal, and is an exfoliative skin disease. Early in the disease, there are one or more scattered distribution of small white dots, white dots gradually expand, the epidermis is constantly peeling, peeling. Summer hand skin, but also to understand whether with nutritional deficiencies, dermatitis and other factors. If necessary, go to the dermatology department of the hospital, combined with the doctor’s advice for the cause, symptomatic treatment.