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Start free with EleplanAutoimmune encephalopathy with parasomnia and obstructive sleep apnea
ORPHA:420789Disease
Also called Anti-IgLON5 disease · Anti-IgLON5 syndrome
What it is
A rare neurologic disorder characterized by a unique non-REM and REM parasomnia with sleep breathing dysfunction, gait instability and repetitive episodes of respiratory insufficiency, as well as autoantibodies against IgLON5. Patients may present stridor, chorea, limb ataxia, abnormal ocular movements, and bulbar symptoms (i.e. dysphagia, dysarthria, episodic central hypoventilation) with normal brain MRI. Excessive day sleepiness and cognitive deterioration have also been reported.
Key facts
- Prevalence
- <1 / 1 000 000
- Age of onset
- Adult, Elderly
- 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.
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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