Definition of Epidural hematoma

Epidural hematoma: A hematoma between the skull and the brain's tissue-like covering, which is known as the dura. Epidural hematoma is usually caused by a full-on blow to the head and is often associated with skull fracture. Diagnosis is usually made via MRI or CT scan. Treatment is trepanation: drilling through the skull to drain the excess blood.

Source: MedTerms™ Medical Dictionary
http://www.medterms.com/script/main/art.asp?articlekey=32325
Last Editorial Review: 3/30/2012