raremaprare-disease reference indexOrphadata 2026-06-23 · HPO 2026-09-01
ORPHA:79139

Japanese encephalitis

Type
Disease
Group
Disorder
Inheritance
Not applicable
Age of onset
All ages
Status
active

Japanese encephalitis is an arboviral disease (<i>i.e.</i> a disease due to a virus transmitted by an arthropod).

1

Names in Orphadata languages

12 of 12 languages
LangNameSynonyms
enJapanese encephalitis
frEncéphalite japonaise
deJapanische Enzephalitis
esEncefalitis japonesa
itEncefalite giapponese
nlJapanse encefalitis
ptEncefalite japonesa
plJapońskie zapalenie mózgu
csJaponská encefalitida
ukЯпонський енцефаліт
zh日本脑炎
trJapon ensefaliti

Definition in:

2

Cross-references

qualifier = Orphanet mapping relation
SourceCodeQualifierICD relationValidation
ICD-10A83.0Especificvalidated
ICD-111C85Especificvalidated
MONDO0019209Evalidated
MeSHD004672Evalidated
UMLSC0014057Evalidated
GARD6797Evalidated
MedDRA10014596Evalidated

E exact · NTBT this ORPHAcode is narrower than the target · BTNT broader than the target · ND not decided.

3

Classification

Preferential parent (Orphanet linearisation):

Parents in the classifications (2):

No children.

4

Genes

0 direct

Orphanet records no gene directly on this code.

5

Prevalence and incidence

2 records
TypeClassValueAreaQualificationValidationSource
Annual incidence1-9 / 1 000 0000.65 / 100 000EuropeValue and classNot yet validatedORPHANET
Point prevalenceUnknown—WorldwideClass onlyNot yet validatedORPHANET

Value is Orphadata's ValMoy: the mean estimate per 100 000 for prevalence and incidence, the number of cases or families for case reports.

6

HPO phenotypes

82 annotations · validated 2020-04-22
HPOTerm (as annotated by Orphanet)Diagnostic
Very frequent (99-80%)
HP:0002353EEG abnormality
HP:0001945Fever
HP:0002383Infectious encephalitis
Frequent (79-30%)
HP:0002039Anorexia
HP:0002069Bilateral tonic-clonic seizure
HP:0200149CSF lymphocytic pleiocytosis
HP:0012229CSF pleocytosis
HP:0025143Chills
HP:0002396Cogwheel rigidity
HP:0003431Decreased motor nerve conduction velocity
HP:0009053Distal lower limb muscle weakness
HP:0003444EMG: chronic denervation signs
HP:0000273Facial grimacing
HP:0012378Fatigue
HP:0012692Focal T2 hyperintense thalamic lesion
HP:0004302Functional motor deficit
HP:0002315Headache
HP:0040272Hyperintensity of MRI T2 signal of the spinal cord
HP:0002922Increased CSF protein concentration
HP:0003496Increased circulating IgM level
HP:0010702Increased circulating immunoglobulin concentration
HP:0002516Increased intracranial pressure
HP:0000298Mask-like facies
HP:0003326Myalgia
HP:0011897Neutrophilia
HP:0003470Paralysis
HP:0007277Paucity of anterior horn motor neurons
HP:0004372Reduced consciousness
HP:0003202Skeletal muscle atrophy
HP:0002013Vomiting
HP:0010549Weakness due to upper motor neuron dysfunction
Occasional (29-5%)
HP:0002027Abdominal pain
HP:0002339Abnormal caudate nucleus morphology
HP:0002060Abnormal cerebral morphology
HP:0002793Abnormal pattern of respiration
HP:0007695Abnormal pupillary light reflex
HP:0002071Abnormality of extrapyramidal motor function
HP:0002418Abnormality of midbrain morphology
HP:0010663Abnormality of thalamus morphology
HP:0012502Abnormality of the internal capsule
HP:0007361Abnormality of the pons
HP:0045007Abnormality of the substantia nigra
HP:0000708Atypical behavior
HP:0002181Cerebral edema
HP:0001266Choreoathetosis
HP:0100543Cognitive impairment
HP:0001259Coma
HP:0002014Diarrhea
HP:0008959Distal upper limb muscle weakness
HP:0001332Dystonia
HP:0010851EEG with burst suppression
HP:0002987Elbow flexion contracture
HP:0003781Excessive salivation
HP:0030826Eyelid fasciculation
HP:0010628Facial palsy
HP:0011468Facial tics
HP:0011153Focal motor seizure
HP:0002816Genu recurvatum
HP:0001276Hypertonia
HP:0002902Hyponatremia
HP:0031218Inappropriate antidiuretic hormone secretion
HP:0010864Intellectual disability, severe
HP:0011182Interictal epileptiform activity
HP:0012195Irregular respiration
HP:0002463Language impairment
HP:0007941Limited extraocular movements
HP:0001287Meningitis
HP:0010546Muscle fibrillation
HP:0010547Muscle flaccidity
HP:0001336Myoclonus
HP:0000639Nystagmus
HP:0002179Opisthotonus
HP:0010543Opsoclonus
HP:0025387Pill-rolling tremor
HP:0100598Pulmonary edema
HP:0002098Respiratory distress
HP:0002203Respiratory paralysis
HP:0025145Rigors
HP:0002133Status epilepticus
HP:0025258Stiff neck
HP:0001762Talipes equinovarus
HP:0001337Tremor

Run the differential on the 3 obligate / very frequent terms

Annotation source: 30455264[PMID]_25015504[PMID]_23141974[PMID]

7

Sources for this card