Neonatal subgaleal hemorrhage.

Subgaleal hemorrhages, although infrequent in the past, are becoming more common with the increased use of vacuum extraction. Bleeding into the large subgaleal space can quickly lead to hypovolemic shock, which can be fatal. Understanding of anatomy, pathophysiology, risk factors, differential diagnosis, and management will assist in early recognition and care of the infant with a subgaleal hemorrhage.