A83.9

Clinical Causes: Infection with viruses from the Flavivirus or Alphavirus family Transmission through mosquito bites, primarily from infected mosquitoes such as the Culex species Exposure in areas where infected mosquitoes are prevalent, especially during summer or in tropical and subtropical climates Occasional transmission through blood transfusions or organ transplants, though rare

Key Symptoms: Sudden onset of high fever Headache and severe discomfort Neck stiffness and sensitivity to light Altered mental state, including confusion or drowsiness Seizures in severe cases Weakness or paralysis on one side of the body Feeling of fatigue and overall malaise Nausea and vomiting

Diagnosis Path: Diagnosing mosquito-borne viral encephalitis involves a combination of medical history, physical examination, and laboratory tests. Blood tests can detect specific antibodies or viral genetic material. Cerebrospinal fluid analysis through a lumbar puncture may reveal inflammation markers. Imaging studies, like MRI or CT scans, can show swelling or other brain changes associated with encephalitis. Occasionally, additional tests are performed to rule out other neurological conditions.

Treatment Protocols: While there is no specific antiviral treatment for mosquito-borne viral encephalitis, supportive care is essential. This may include hospital admission for close monitoring, intravenous fluids, medications to reduce fever and manage seizures, and respiratory support if needed. Rest and hydration are vital for recovery, and some patients may require rehabilitation therapies for neurological deficits. Preventive measures, such as avoiding mosquito bites and eliminating mosquito breeding sites, are crucial to reducing risk.