The estimated number of cases of the disease is 1.5 per million people per year. According to the California Encephalitis Project, the disease has a higher incidence than its individual viral counterparts in patients younger than 30. The largest case series as of 2013 characterized 577 people with<unk> . The data were limited, but provides the best approximation of disease distribution. It found that women make up 81% of cases. Disease onset is skewed toward children, with a median age of diagnosis of 21 years. Over a third of cases were children, while only 5% of cases were patients over the age of 45. This same review found that 394 out of 501 patients (79%) had a good outcome by 24 months. 30 people (6%) died, and the rest were left with mild to severe deficits. The study mentioned that of the 38% presenting with tumors, 94% of those presented with ovarian teratomas. Within that subset, African & Asian women were more likely to have a tumor, but this was not relevant to the prevalence of the disease within those racial groups.
Anti-NMDA receptor encephalitis
Neuroleptic malignant syndrome
Anti-Hu associated encephalitis
Psychosis
Anti-VGKC-complex encephalitis
Viral encephalitis
Powassan encephalitis
Autoimmune encephalitis