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Start free with EleplanPostinfectious cerebellitis
ORPHA:624244Disease
Also called ACA · APCA · Acute cerebellar ataxia · Acute postinfectious cerebellar ataxia · PIC · Para-infectious cerebellitis
What it is
A rare cerebellar ataxia characterized by cerebellar inflammation caused by viral or bacterial infection-triggered, immune-mediated mechanisms. It mainly affects young children following an episode of usually viral infection (notably varicella), but sometimes also adults, mostly upon Epstein-Barr virus or mycoplasma infection. Affected individuals mainly present with acute-onset afebrile gait ataxia, meningeal signs, high intracranial pressure with or without extracerebellar manifestations (such as clouding of consciousness, seizures and altered mental status) or extracerebellar focal signs. Mild behavioral changes can also be present. Pleocytosis in cerebrospinal fluid is reported in the majority of the patients.
Key facts
- Age of onset
- All ages
- Inheritance
- Not applicable
- Classified as
- Disease
ICD-10 codes
ICD-10 has no distinct code for most rare diseases, so many are filed under the nearest available one. A shared code identifies the group, not this disease — the ORPHAcode above is what identifies it.
Related health topics
Reached through the ICD-10 categories this disease is filed under, so these describe the broader group rather than this disease specifically.
Cross-references
Orphadata Science: Free access data from Orphanet. © INSERM 1999. Data version 2026-06-23. Available under CC BY 4.0. This is a reference, not medical advice.
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