The appearance of a baby’s head full of prickly heat should be kept cool and dry in the area of the lesions, and if necessary, can be treated with topical medications as prescribed by the doctor. Prickly heat is a common skin disease in summer or hot and humid environments, mostly due to poor perspiration caused by sweat glands. For the phenomenon of the baby’s head full of prickly heat, it should keep the lesion area cool, if necessary, can follow the doctor’s prescription to use topical drug treatment. The details are as follows: 1. Keep the prickly heat area cool and dry: adjust the room temperature to keep the skin cool and clean the excess sweat, prickly heat will usually subside on its own. 2. Topical medication: In severe cases, babies may also develop small raised blisters, papules or pustules, some of which are accompanied by tingling or itching, etc., which can be treated with topical medication as prescribed by the doctor, such as glycerite lotion. If you are experiencing any of these problems and have any questions, it is recommended that you consult a professional dermatologist.