The child is the baby in the hands of the parents, any movement on the child will affect the parents’ heart, especially during the infant period, the child’s skin is relatively delicate, so it is said that the cause of the red spot on the back of the head is very much. 1.If there is no similar red spot before, and it appears suddenly and does not get bigger, there is no need to worry excessively in this case, it may be the traces pressed out by lying on the back for a long time. Another possibility is a skin disease caused by fungal and viral infections, in this case only antifungal and antiviral cream treatment can be carried out under the guidance of a doctor. 3.If the mother has eaten some allergy-causing food during breastfeeding, the allergens will be transmitted to the baby through breast milk, forming red spots. 4, if the pregnant woman has eaten some drugs or contact with irritating chemical ingredients during pregnancy, it will also cause red spots on the back of the baby’s head, followed by genetic factors. For infants with red spots on the back of the head can be roughly classified into these categories, after a similar situation, do not be too anxious, you can first observe a few days to see, if there are abnormalities, or take the child to the hospital as soon as possible.