Palm rash may be due to ringworm, contact dermatitis, sweat herpes and other factors, it is recommended that the patient under the guidance of a doctor to clarify the specific cause of the disease, through drugs and other means of treatment. 1. Ringworm: ringworm is caused by fungal infection, which is contagious. In the treatment, you can use topical tretinoin econazole cream, terbinafine hydrochloride cream and other antifungal drugs. 2. Contact dermatitis: Hand contact dermatitis is generally associated with contact with irritating or sensitizing substances. It can be treated with topical glucocorticosteroid drugs, such as mometasone furoate cream and dianabed cream. 3. Sweat blisters: Sweat blisters can be found on the palms of the hands, fingers and other parts of the body as dense small blisters, which are common in summer. In the treatment can be used externally halometasone cream, at the same time to pay attention to the hands of the dry clean. For patients with red rashes on the palms of the hands, it is recommended to go to a regular hospital in a timely manner, under the guidance of a professional doctor for standardized treatment.