Heat rash, also called prickly heat, is characterized by white prickly heat, red prickly heat, pus prickly heat, deep prickly heat, etc. Treatment can be done with medicines such as glycerin lotion. 1. White prickly heat: It occurs on the trunk and rubbing parts, mostly seen in people who have been lying in bed for a long time and sweating a lot. Performance for the pinhead size superficial small blisters, blisters around no redness, easy to break. Generally no self-conscious symptoms, usually 1~2 days absorption, leaving flakes. 2. Erythema: the most common. Good in the folds, pediatric head and face. Mostly seen in young children, high temperature workers, manifested as pinpoint papules, herpes, surrounded by redness, after subsiding with flaking. There is a mild burning, stinging sensation. 3. Pustular rash: it occurs in the skin folds, pediatric head and neck. It is characterized by small superficial pustules with pinhead size at the tip, and the bacterial culture in the pustules is negative. 4. deep rash: occurs in the neck, trunk, manifested as dense, non-inflammatory herpes papules consistent with sweat pores, usually no itching, extensive lesions may appear fever, headache, dizziness and other symptoms. Treatment can use glycerin lotion, prickly heat powder, Huanglian puff powder external coating of the affected area, itching obvious oral antihistamine drugs such as loratadine, etc., should be used under the guidance of a doctor.