Dangerous Headaches: Viral Encephalitis

Some encephalitis causing viruses are transmitted via mosquito bites.

Sometimes viral encephalitis can occur as an immunological complication of vaccination as the immune system attacks central nervous system antigens that resemble proteins of the infectious illness. This is more common with live virus vaccines.


The initial symptoms of viral encephalitis are headache, stiff neck and fever. The headache can be severe. Lethargy, drowsiness and confusion can then develop.

via Dangerous Headaches: Viral Encephalitis.


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