Causes of Secondary and Prolonged Fever During Treatment of Bacterial Meningitis and Viral Encephalitis

Inclusion Criteria: * Children from one month to 18 years. * Who were diagnosed with bacterial meningitis or viral encephalitis and admitted to neurological department at Assiut University Children's Hospital (AUCH). * Develop secondary or prolonged fever despite appropriate treatment. Exclusion Criteria: * Pediatric patients with suspected autoimmune encephalitis. * Patient on immunosuppressive therapy (e.g., post-organ transplant, chemotherapy). * Pediatric patients suspected metabolic disorders. * Those with suspected endocrine dysfunction.