Subdural hematoma
Subdural Hematoma
Subdural Hematoma (pronounced: sub-doo-ral he-ma-to-ma) is a type of intracranial hemorrhage that occurs beneath the dura mater, one of the layers of the meninges that cover the brain and spinal cord.
Etymology
The term "Subdural Hematoma" is derived from the Latin words 'sub' meaning 'under', 'dura' referring to the 'hard' outermost layer of the meninges, and 'hematoma' from the Greek 'haima' for 'blood' and '-oma' meaning 'mass or collection'. Thus, it refers to a collection of blood under the dura mater.
Definition
A Subdural Hematoma is a medical condition characterized by the collection of blood between the dura mater and the arachnoid mater, another layer of the meninges. This usually results from a severe head injury, when fast-changing velocities within the skull may stretch and tear small veins bridging the dura mater and the brain.
Types
There are three types of Subdural Hematoma:
- Acute Subdural Hematoma: This is the most common and dangerous type of Subdural Hematoma. It usually results from a serious head injury, and symptoms can appear immediately to within 2 days.
- Subacute Subdural Hematoma: Symptoms for this type of hematoma develop between 3 days to 2 weeks after the injury.
- Chronic Subdural Hematoma: This type of hematoma is more common in older adults. Symptoms may not appear for weeks after the injury; however, once they do, they get worse over time.
Symptoms
Symptoms of a Subdural Hematoma can include headache, confusion, change in behavior, dizziness, nausea and vomiting, lethargy or excessive drowsiness, and weakness or numbness in one side of the body.
Treatment
Treatment for Subdural Hematoma depends on its size and rate of growth. Small ones with minimal symptoms may require no treatment but close monitoring while larger ones or those causing symptoms may require surgical procedures like craniotomy, burr holes, or craniectomy.
See Also
External links
- Medical encyclopedia article on Subdural hematoma
- Wikipedia's article - Subdural hematoma
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