Hematoma, subdural
Bleeding into the space between the dura (the brain cover) and the brain itself. This space is called the subdural space. If the hematoma puts increased pressure on the brain, neurological abnormalities including slurred speech, impaired gait, and dizziness may result and progress to coma and even death. Subdural hematomas can be caused by minor accidents to the head, major trauma, or the spontaneous bursting of a blood vessel in the brain (aneurysm). Acute subdural hematomas are usually due to severe head trauma. Chronic subdural hematomas may be very insidious. They usually go unnoticed, sometimes for 2 to 4 weeks: When they do cause problems, the incident that caused the bleeding is often long past. Symptoms include increasing daily headache, fluctuating drowsiness or confusion, and mild weakness on one side of the body. Subdural hematomas are more common in alcoholics and patients over 50 years of age. In infants, subdural hematomas can cause the fontanel to bulge and the head circumference to enlarge. Diagnosis is usually confirmed by MRI or CAT scan. Treatment is by trepanation — drilling through the skull to drain the excess blood.

Medical dictionary. 2011.

Look at other dictionaries:

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  • Hematoma, intracranial — A hematoma within the brain cavity (cranium, skull) or within the brain itself. See hematoma, epidural; hematoma, subdural; hematoma, intracerebral …   Medical dictionary

  • subdural hematoma — n a hematoma that occurs between the dura mater and arachnoid in the subdural space and that may apply neurologically significant pressure to the cerebral cortex * * * accumulation of blood between the dura mater and the arachnoid, resulting in… …   Medical dictionary

  • Hematoma — Classification and external resources Hematoma on thigh, 6 days after a fall down stairs, 980 ml of blood drained a few days later ICD 10 T …   Wikipedia

  • subdural — [səb door′əl, səbdyoor′əl] adj. located between the dura mater and the arachnoid membranes of the brain and spinal cord [a subdural hematoma] …   English World dictionary

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