Adult heat rash is generally due to the blockage of sweat gland ducts caused by a common skin disease, can be treated by topical astringent anti-itching drugs, glucocorticoid cream, oral antihistamine drugs. 1. Topical astringent anti-itching drugs: commonly used drugs are glycerite lotion, adult prickly heat powder, etc., has a very good astringent anti-itching effect. 2. Glucocorticoid creams: Weak to moderate glucocorticoid drugs can be used to treat the more serious conditions, such as hydrocortisone butyrate cream, budesonide cream and so on. 3. Oral antihistamines: For severe itching, antihistamines can be taken for treatment, such as loratadine and cetirizine. Treatment of medication should be carried out under the guidance of a doctor, not random use of drugs. At the same time, daily care should pay attention to maintain indoor ventilation, cool, in order to reduce sweating and facilitate the evaporation of sweat; clothing should be wide, to facilitate the evaporation of sweat; timely replacement of wet clothes, often keep the skin clean and dry, often use a dry towel to wipe the sweat or use warm water to take a bath.