Infants with small red rashes on the head are mostly caused by heat rash, eczema, hemangioma, etc. Different causes of different ways to deal with, mainly including daily care, topical ointment and so on. 1. Heat rash: infant skin is tender, stimulated by a variety of external factors, affecting the sweat discharge resulting in heat rash, the head is easy to grow small red rash. Attention should be paid to the room temperature should not be too high, keep the room air circulation, clothing do not wear too much, wear loose and cotton clothes. 2. Eczema: Small rashes on the head that cannot be controlled by daily care and are accompanied by significant itching may be caused by eczema. Consider using a weak glucocorticoid cream to control inflammation, such as Dinaid cream, and note that the topical cream should not be used for more than a week. 3. Hemangioma: Hemangioma can be a sesame-sized, fingernail-sized red rash or small red spot in the early stage, and then gradually increase in size and thickening can be protruding. The more superficial hemangioma on the head can be treated with laser. There may be other causes of small red rashes on the head of infants, it is recommended to go to the hospital, improve the examination to clarify the cause of the disease, under the guidance of the doctor to give targeted treatment or treatment. All of the above medications should be used under the guidance of a doctor, avoid self-medication.