encephalitis lethargica
MONDO:0019384Mondo
Findings
No curated finding names encephalitis lethargica yet. Everything below is reference data from Mondo, HPO and GenCC, not evidence about what affects it.
Definition
A form of encephalitis, the etiology of which is uncertain, that is characterized by lethargy and headache.
Definition from the Mondo Disease Ontology (MONDO:0019384), read 2026-09-29. CC BY 4.0.
Features
30 features
What the disease is reported to present with, and how often among people who have it — never how often a feature means the disease. HPO, annotations 2026-09-02.
- EncephalopathyHPOHP:0001298
- Very frequent (80% to 99% of cases)
- Sleep disturbanceHPOHP:0002360
- Very frequent (80% to 99% of cases)
- Abnormal involuntary eye movementsHPOHP:0012547
- Frequent (30% to 79% of cases)
- AutoimmunityHPOHP:0002960
- Frequent (30% to 79% of cases)
- Bilateral basal ganglia lesionsHPOHP:0007146
- Frequent (30% to 79% of cases)
- DiplopiaHPOHP:0000651
- Frequent (30% to 79% of cases)
- DyskinesiaHPOHP:0100660
- Frequent (30% to 79% of cases)
- FeverHPOHP:0001945
- Frequent (30% to 79% of cases)
- HeadacheHPOHP:0002315
- Frequent (30% to 79% of cases)
- Increased circulating immunoglobulin concentrationHPOHP:0010702
- Frequent (30% to 79% of cases)
- Increased CSF protein concentrationHPOHP:0002922
- Frequent (30% to 79% of cases)
- LethargyHPOHP:0001254
- Frequent (30% to 79% of cases)
Show the remaining 18
- Limitation of neck motionHPOHP:0005986
- Frequent (30% to 79% of cases)
- Mental deteriorationHPOHP:0001268
- Frequent (30% to 79% of cases)
- MyalgiaHPOHP:0003326
- Frequent (30% to 79% of cases)
- ParkinsonismHPOHP:0001300
- Frequent (30% to 79% of cases)
- PharyngitisHPOHP:0025439
- Frequent (30% to 79% of cases)
- Recurrent viral infectionsHPOHP:0004429
- Frequent (30% to 79% of cases)
Where it sits
Other names
4 names
Resolves to: encephalitis lethargica
- Also called
- epidemic encephalitislethargic encephalitisVon Economo encephalitisvon Economo's disease