Infantile baldness may be caused by genetic factors, autoimmune diseases, infectious factors and insufficient nutritional intake. 1. Genetic factors: Infantile baldness may be related to heredity, baldness has a certain genetic susceptibility, if the parents or someone in the family suffers from baldness, it may lead to higher chances of the next generation suffering from baldness, which may lead to baldness in infants. 2. Autoimmune diseases: If the baby suffers from Hashimoto’s thyroiditis, vitiligo and other autoimmune diseases, it may lead to the loss of immune activity of the hair follicles during the growth period, which may lead to the occurrence of infantile baldness. 3. Infectious factors: if the baby is infected with fungus, herpes zoster, influenza and other diseases, it may lead to a decline in the body’s immune system, which induces the baby to develop bald spots. 4. Insufficient nutritional intake: If infants have insufficient nutritional intake for a long time and lack of calcium, iron and other elements, baldness may also occur. There are many causes of spot baldness in infants, so parents are advised to bring their children to regular hospitals for consultation and examination to clarify the causes of the disease.