8E48/G04.8 Encephalitis, not elsewhere classified



Encephalitis, not elsewhere classified, is a rare disorder characterized by inflammation of the brain. The exact cause is unknown and there are no known risk factors associated with the condition.


Diagnosis of encephalitis, not elsewhere classified, is based on the presence of signs and symptoms and the exclusion of other possible causes. A physical examination may detect signs such as changes in mental status, headache, fever, and seizures. A CT scan and lumbar puncture may reveal inflammation in the brain and/or spinal cord.

Differential diagnosis

Differential diagnosis for encephalitis, not elsewhere classified, includes other conditions that cause inflammation of the brain, such as bacterial or viral meningitis, brain tumor, stroke, and certain autoimmune disorders.


Treatment of encephalitis, not elsewhere classified, is based on the underlying cause. If the cause is bacterial or viral, antibiotics or antiviral medications may be prescribed. In some cases, corticosteroids may be used to reduce inflammation.


The prognosis for encephalitis, not elsewhere classified, is variable and depends on the severity of the condition and the underlying cause. In some cases, the disorder may resolve on its own, while in others, it may cause long-term neurological problems such as cognitive impairment or seizures.

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