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Start free with EleplanSpirillary rat-bite fever
ORPHA:99903Etiological subtype
Also called Sodoku
What it is
A rare bacterial zoonosis characterized by inflammation which appears at the site of a rat bite or scratch that becomes painful, indurated, edematous and may ulcerate. The inflammation is followed by fever, vomiting and chills and is associated with local lymphadenopathy. Spirillary rat-bite fever (RBF), also known as Sodoku (Japanese for so: rat and doku: poison), is caused by the Gram-negative bacillus Spirillum minus and is transmitted to humans through the bites and scratches of rats.
Key facts
- Age of onset
- All ages
- Classified as
- Etiological subtype
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.
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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