Pillow baldness in infants may be caused by lack of nutrition, excessive sweating of the head and other reasons. 1. Lack of nutrition: it is mostly considered to be related to the insufficient intake of calcium during pregnancy or improper feeding after birth, which is considered to be the precursor of rickets. 2. Head sweating: If parents usually give babies too many clothes, or cover too thick bedding, resulting in increased body temperature, increased sweating, head itching, because the baby’s mouth can not speak, can only be through the head of the way to dissipate heat to a certain extent, then it is easy to occur occipital baldness. Pillow baldness may also have other causes, it is recommended to go to the hospital in a timely manner, improve the examination to clarify the cause of the disease, under the guidance of the doctor to give targeted treatment or treatment.