A subdural hematoma is a buildup of blood on the surface of the brain. The blood builds up in a space between the protective layers that surround your brain. Your brain sits within a bony skull. Inside your skull and over the brain there are 3 layers called the meninges.

Where are subdural hematomas located?

A subdural hematoma is a type of bleed inside your head. More precisely, it is a type of bleed that occurs within the skull of head but outside the actual brain tissue. The brain has three membranes layers or coverings (called meninges) that lay between the bony skull and the actual brain tissue.

Where do hematomas occur in the brain?

An intracranial hematoma is a collection of blood within the skull. It's most commonly caused by the rupture of a blood vessel within the brain or from trauma such as a car accident or fall. The blood collection can be within the brain tissue or underneath the skull, pressing on the brain.