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Start free with EleplanProgressive multifocal leukoencephalopathy
ORPHA:217260Disease
Also called PML · Progressive multifocal leukoencephalitis
What it is
Orphanet has not published a description for this disease yet. The identifiers, classification and cross-references below are still current.
Key facts
- Prevalence
- <1 / 1 000 000 (annual incidence, Sweden)
- Age of onset
- All ages
- Inheritance
- Not applicable
- Classified as
- Disease
Prevalence figures describe populations, not individuals, and are often estimates from a single study. Where the figure is an incidence or a birth prevalence, it says so.
Signs and symptoms
Very common80–99%
8Common30–79%
12Sometimes5–29%
11- Aphasia
- Hematological neoplasm
- Homonymous hemianopia
- Nystagmus
- Oculomotor nerve palsy
- Parkinsonism
- Personality changes
- Seizure
and 3 more in this range
These ranges are how often a sign appears across everyone diagnosed, not a prediction for one person — most people have some of these and not others. Orphanet also records findings that are specifically absent in this disease; those are in the data but not listed here.
ICD-10 codes
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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