The collection of blood in tissues or a space following rupture of a blood vessel Regarding Brain: Epidural--Outside the brain and its fibrous covering, the dura, but under the skull Subdural--Between the brain and its fibrous covering (dura) Intracerebral--In the brain tissue Subarachnoid--Around the surfaces of the brain, between the dura and arachnoid membranes
Hematomas is a collection of blood which may result when small blood vessels are broken by the injury They can occur between the skull and the brain (epidural or subdural hematoma), or inside the substance of the brain itself (intracerebral hematoma)