Hot and painful skin may be caused by atopic dermatitis, peripheral neuritis, herpes zoster and other causes. 1. Allergic dermatitis: patients with allergic body, if accidentally contacted with animal hair, poor quality cosmetics and other allergens, may cause skin allergy symptoms, which may lead to skin rashes, itching, hot pain and other symptoms. 2. Peripheral neuritis: Peripheral neuritis is mostly related to pathogen infection, allergy and other factors, which can lead to burning pain in the skin. 3. Herpes zoster: After being infected with varicella zoster virus, herpes zoster can appear on the localized skin with obvious symptoms such as itching, pain and burning pain. When the patient has the symptom of hot and painful skin, he should go to the dermatology department of the hospital in time for a clear diagnosis in order to receive appropriate treatment.