Erythema on the back of baby’s head is very common, and there are many reasons for this condition, the more common reasons are caused by eczema or hemangioma. 1. Eczema: If the baby has red spots on the back of the head, accompanied by itching symptoms, the child often scratching or shaking his head, generally considered to be caused by eczema. Parents are advised to take good care of the local skin cleaning and apply boric acid and zinc oxide ointment. 2. Hemangioma: If the red spot on the back of the head of the child is darker in color and gradually increases in size, protruding from the surface of the skin, it is mostly considered to be caused by hemangioma. The red spot on the back of the baby’s head may also have other reasons, it is recommended to go to the hospital in time, improve the examination to clarify the cause of the disease, and then give targeted treatment or treatment.