Subdural effusion

Subdural Effusion is a medical condition that involves the accumulation of fluid between the dura mater and the arachnoid mater, two of the three meninges that cover the brain and spinal cord. This condition is often associated with head trauma, brain surgery, meningitis, or subdural hematoma.

Causes

Subdural effusion is typically caused by an inflammatory response to injury or infection. This response leads to an increase in the permeability of the blood vessels in the dura mater, allowing fluid to leak into the subdural space. The most common causes of subdural effusion include:

• Head trauma
• Brain surgery
• Meningitis
• Subdural hematoma

Symptoms

The symptoms of subdural effusion can vary depending on the amount of fluid accumulation and the rate at which it accumulates. Common symptoms include:

• Headache
• Nausea and vomiting
• Seizures
• Neurological deficits such as weakness or numbness
• Changes in mental status, such as confusion or drowsiness

Diagnosis

Subdural effusion is typically diagnosed through imaging studies such as a CT scan or MRI. These tests can show the presence of fluid in the subdural space. In some cases, a lumbar puncture may be performed to analyze the fluid for signs of infection or inflammation.

Treatment

The treatment for subdural effusion depends on the underlying cause and the severity of the symptoms. In some cases, the condition may resolve on its own without treatment. In other cases, treatment may involve:

• Medications to reduce inflammation and swelling
• Surgery to drain the fluid
• Treatment of the underlying cause, such as antibiotics for an infection

See also

• Hydrocephalus
• Subdural hematoma
• Meningitis

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References

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External links

• Subdural Effusion at PubMed
• Meningitis at Mayo Clinic