Small blisters (blisters) on the hands in summer may be the result of diseases such as herpes sweating and ringworm. 1. Sweat herpes: belongs to a type of eczema, the cause of the onset of the disease may be related to abnormal humidity, high environmental temperature, mostly in the summer onset. Typical clinical manifestations are small blisters the size of rice grains, itching, etc., followed by peeling. In daily life, patients avoid contact with soap, detergent, etc., so as not to cause skin irritation, and try to keep calm emotionally, usually a few weeks will recover on their own. If the symptoms are serious, you can follow the doctor’s instructions to use compound dexamethasone acetate cream and other drugs for treatment. 2. ringworm: belongs to a fungal infection caused by skin diseases, clinical features are slight itching, small skin blisters, flaking and other symptoms, commonly found between the fingers, palm side, palm and other parts. It can be treated with terbinafine hydrochloride ointment and urea cream under the guidance of a doctor. Small blisters on the hands in summer are more serious, it is recommended to seek medical treatment as soon as possible, under the guidance of the physician to use medication, can promote recovery. Keep your hands dry and hygienic in daily life, avoid scratching to avoid infection.