<unk>  usually has an acute onset. Most people with<unk>  experience headaches and seizures; many also experience visual changes, confusion and drowsiness, weakness of the arm and/or leg on one side of the body (hemiplegia), difficulty speaking, or more rarely other neurological symptoms. The visual changes in<unk>  may include hemianopsia (inability to see the left or right part of the visual field), blurred vision, lack of visual awareness on one side, visual hallucinations, and cortical blindness. Seizures occur in about two thirds of cases. In children this is more common still, at 90%. If seizures occur they may be focal or generalized. A small proportion develops status epilepticus, where seizures are not controlled with simple measures.
Posterior reversible encephalopathy syndrome
Viral encephalitis
Autoimmune encephalitis
Lymphocytic meningoradiculitis
Limbic encephalitis
Wernicke encephalopathy
Chronic traumatic encephalopathy
Hypertensive leukoencephalopathy