Encephalitis refers to inflammation of the brain parenchyma secondary to infectious or autoimmune causes. The patient can present with both physical and cognitive signs and symptoms. The physical characteristics of encephalitis are: - Fever - Neck stiffness - Photophobia - Headache - Seizures - Sound sensitivity - Altered consciousness - Movement disorders - Partial paralysis of limbs - Diplopia - Impaired speech - Impaired hearing - Coma The major cognitive features are: - Drowsiness - Disorientation - Confusion - Anxiety - Loss of memory behavioral changes - Impaired cognition - Hallucination Reference: https://www.hopkinsmedicine.org/health/conditions-and-diseases/encephalitis Image via: https://www.researchgate.net/publication/51816352_Neuro-Intensive_Care_of_Patients_with_Acute_CNS_Infections/figures?lo=1&utm_source=google&utm_medium=organic