A85.1

Clinical Causes: Infection with adenoviruses, particularly types 1, 2, 5, and 7 Direct spread from respiratory or ocular infections to the brain Weakened immune system, which increases susceptibility Less commonly, through infected bodily fluids or contaminated surfaces

Key Symptoms: High fever Headache and neck stiffness Altered mental status, including confusion or disorientation Seizures Sensory changes or weakness on one side of the body Photophobia (sensitivity to light) Nausea or vomiting Behavioral changes, such as agitation or lethargy Signs of increased intracranial pressure, like vomiting and drowsiness Potential loss of consciousness in severe cases

Diagnosis Path: Diagnosing adenoviral encephalitis involves a combination of clinical evaluation and laboratory tests. Healthcare professionals typically perform neuroimaging, such as MRI or CT scans, to observe brain inflammation. Cerebrospinal fluid (CSF) analysis through lumbar puncture helps detect viral presence and inflammatory markers. Specific laboratory tests, including PCR (polymerase chain reaction) assays of CSF or blood, are used to identify adenoviruses precisely. Additional blood tests and a comprehensive medical history assist in ruling out other causes of encephalitis and confirming the diagnosis.

Treatment Protocols: Currently, there are no specific antiviral medications approved solely for adenoviral encephalitis. Management primarily focuses on supportive care to reduce brain swelling, control seizures, and maintain vital functions. Hospitalization in an intensive care setting is often necessary. Patients may receive intravenous fluids, medications to control seizures or reduce inflammation, and measures to monitor and treat intracranial pressure. In certain cases, immune-modulating therapies could be considered, especially in immunocompromised individuals. Early diagnosis and supportive treatment are crucial for improving outcomes.