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Start free with EleplanFelty syndrome
ORPHA:47612Disease
Also called Splenomegaly-neutropenia-rheumatoid arthritis syndrome
What it is
Felty syndrome (FS), also known as ''super rheumatoid'' disease, is a severe form of rheumatoid arthritis (RA), characterized by a triad of RA, splenomegaly and neutropenia, resulting in susceptibility to bacterial infections.
Key facts
- Age of onset
- Adult
- Inheritance
- Unknown
- Classified as
- Disease
Signs and symptoms
Very common80–99%
12Common30–79%
10Sometimes5–29%
14- Bone marrow hypocellularity
- Cellulitis
- Episcleritis
- Generalized hyperpigmentation
- Hepatomegaly
- Irregular hyperpigmentation
- Lymphoma
- Pericarditis
and 6 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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