Subdural hematoma (SDH), also referred to as subdural hemorrhage, is bleeding that occurs on the surface of the brain.Acute SDH can occur as a result of a serious head trauma. The brain can fill with blood very quickly and the brain tissue becomes compressed. This is the most severe form of the condition, often leading to brain injury and death.
SDH caused by minor head trauma is referred to as “chronic,” and this is the most common form of the condition among elderly individuals. This is primarily because older adults have greater brain atrophy, meaning the veins between the brain’s surface and the protective covering are thinner and more susceptible to damage from the slightest trauma.Repeated falls and recurrent head injuries – which frequently occur among military veterans – can also raise the risk of chronic SDH.