Itchy hand blisters (blisters) are considered to be caused by sweat herpes, eczema, tinea cruris, solar dermatitis and other factors. Under the guidance of the doctor can apply drugs and other treatment. 1. Sweat herpes: usually caused by environmental factors, local contact with metal substances, mental and psychological factors. It can be treated by applying medicines such as glycerine lotion and tretinoin urea ointment under doctor’s guidance. 2. Eczema: usually caused by chronic infection, heredity, endocrine and metabolic diseases and internal factors such as abnormal immune function. It can be treated by applying hydrocortisone cream, dexamethasone cream and other medicines under doctor’s guidance. 3. Ringworm: It is often accompanied by itching, blisters, peeling and red rashes. Under the guidance of the doctor, it can be treated by applying terbinafine hydrochloride, bifonazole cream and other drugs. 4. Solar dermatitis: If exposed to the hot sun for a long time, the skin will become inflamed with blisters and itching. Under the guidance of the doctor, it can be treated by applying loratadine tablets, cetirizine hydrochloride tablets and other drugs. Warm tips: the cause of blisters is very complex, must be timely medical treatment, so as not to delay the condition, affecting the treatment.