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Start free with EleplanNeuralgic amyotrophy
ORPHA:2901Disease
Also called Acute brachial plexus neuritis · Brachial plexus neuritis · Immune brachial plexus neuropathy · Mononeuritis multiplex with brachial predilection · Neuralgic shoulder amyotrophy
What it is
A rare disorder of the peripheral nervous system characterized by the sudden onset of extreme pain in the upper extremity followed by rapid multifocal motor weakness and atrophy and a slow recovery in months to years. NA includes both an idiopathic (INA, also known as Parsonage-Turner syndrome) and hereditary (HNA) form.
Key facts
- Prevalence
- 1-5 / 10 000 (Europe)
- Age of onset
- Adult
- Inheritance
- Autosomal dominant, 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%
6Sometimes5–29%
15- Abnormality of speech or vocalization
- Acrocyanosis
- Bifid uvula
- Cleft palate
- Epicanthus
- Hypoesthesia
- Narrow mouth
- Peripheral neuropathy
and 7 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.
Gene
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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