A Subdural Hematoma (SDH) is a collection of blood outside the brain, most often caused by traumatic head injury. The infographic below by Mount Sinai Medical Center describes the causes and treatment for this type of head injury.
Irma Wallace
Co-founder and Vice President of SearchRank, responsible for many of the day to day operations of the company. She is also founder of The Arizona Builders' Zone, a construction / home improvement portal.