Cephalohematoma is a birth injury that occurs due to excessive pressure on the newborn’s head. Here’s more on its causes, symptoms, diagnosis, treatment, etc. Cephalohematoma is a type of hemorrhage that occurs between a newborn's skull and periosteum, usually due to birth trauma. Learn about its risk factors, complications, diagnosis and treatment options, and how to prevent it with gentle delivery techniques. Cephalohematoma Cephalohematoma is a collection of blood or hematoma between the scalp and the skull periosteum, located in the subperiosteal space and as such, is ... Cephalohematoma is a birth injury that causes a blood pool under the scalp, but not in the brain. It usually heals on its own, but may need monitoring or drainage in some cases.