Difference Between Epidural and Subdural

Epidural, as its name implies, is the epidural space, which is a small space outside the dura mater under the inner plate of the skull.

The subdural refers to the subdural space outside the brain tissue, which is larger than the epidural space. Subdural hematomas and other lesions cause more severe symptoms than epidurals because the subdural is directly facing the brain tissue. The most common disease of an epidural is an epidural hematoma, which is a hematoma formed when the broken end of an epidural fracture punctures a blood vessel in the dura.

Subdural hematoma is usually caused by bleeding from the surface of brain tissue infiltrating into the subdural layer, often combined with cerebral contusion and laceration, so its clinical symptoms are significantly heavier than epidural.

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