Subdural hematoma is defined as a collection of blood in which location?

• A. Under the dura mater
• B. In the subarachnoid space
• C. Between the skull and the outer membrane of the brain
• D. In the brain tissue

Answer: (A)

Subdural hematoma is a bleed into the subdural space, which sits between the dura mater and the arachnoid membrane. That makes the correct location “under the dura mater.” It’s distinct from other brain bleeds: an epidural hematoma is between the skull and dura; a subarachnoid hemorrhage fills the space between the arachnoid and pia; and an intracerebral bleed occurs within brain tissue.