A92.31

Clinical Causes: Transmission primarily through bites of infected mosquitoes, especially those from the Culex species In rare cases, transmission through blood transfusions, organ transplants, or from mother to child during pregnancy, delivery, or breastfeeding Environmental factors such as climate and mosquito populations influence the likelihood of infection

Key Symptoms: High fever Sudden severe headache Stiff neck Disorientation or confusion Muscle weakness or paralysis Seizures Difficulty speaking or understanding speech Sensitivity to light (photophobia) Nausea or vomiting Loss of coordination or balance In more severe instances, coma or death may occur

Diagnosis Path: Diagnosis of West Nile virus infection with encephalitis involves a combination of medical history, physical examination, and laboratory tests. Blood tests can identify antibodies to the virus, indicating recent or past infection. Cerebrospinal fluid (CSF) analysis obtained via lumbar puncture may reveal inflammation or presence of the virus. Imaging studies like MRI or CT scans could be used to assess brain inflammation and rule out other conditions. Sometimes, additional tests like EEGs are performed if seizures are present.

Treatment Protocols: There is no specific antiviral medication available for West Nile virus infection. Treatment primarily focuses on relieving symptoms and supporting vital functions. Hospitalization may be necessary for severe cases, especially those involving neurological complications. Supportive care includes hydration, pain relief, anti-inflammatory medications, and management of complications such as seizures. Rest and monitoring are essential; some patients recover fully, while others may experience long-term neurological effects. Preventive strategies, including mosquito control and protective clothing, are important for reducing the risk of infection.