What is Chronic Subdural Hematoma?
A chronic subdural hematoma is a condition where there is an old blood clot present between the brain and the dura mater. This condition is chronic, as the clot slowly forms over a period of several days to weeks.
Causes of Chronic Subdural Hematoma
Chronic subdural hematoma gradually develops over a period of days to weeks. The common cause is a minor head trauma. Chronic subdural hematoma can also occur in individuals who are above the age of 60 due to brain atrophy or other medical conditions. Atrophy causes tear in the minor blood vessels which bleed on to the brains surface. This condition can also occur due to alcohol abuse, blood thinning medications and seizures.
Symptoms of Chronic Subdural Hematoma
- Headache which gradually increases over several days.
- Decreased memory and confusion.
- Nausea and vomiting.
- Changes in behavior.
- Impaired vision.
Treatment of Chronic Subdural Hematoma
- Immediate medical attention should be sought.
- CT or MRI scans help in diagnosis and confirming the extent of the bleed.
- Surgery- A small hole is drilled in the skull to drain the blood and release the pressure.
- Majority of the patients show significant improvement after the drainage with only few long-term side-effects.