Osler nodules

Osler's nodule on the hand of a 43 year old man with bacterial endocarditis.

Classification according to ICD-10
I33.0	Acute and subacute infectious endocarditis
ICD-10 online (WHO version 2019)

Osler nodules (named after the Canadian doctor Sir William Osler (1849-1919)) are small, subcutaneous , painful, reddened, hemorrhagic rashes (abnormal skin changes) that are usually signs of microembolism or immune complex vasculitis in the context of infectious endocarditis . They occur in particular on the tips of the fingers and toes, as well as in the thenar and hypothenar areas , but also on the arms and legs. A group-like arrangement of the nodes, often in the hundreds, is characteristic. They usually heal with flaking after a few days .

The Osler nodules are not to be confused with Osler's disease .

Janeway lesions are very similar ; the difference is that the latter are not tender and tend to appear on the palms of the hands and soles of the feet.

source

• Otto Braun-Falco et al. (Ed.): Dermatology and Venerology. 5th edition. Springer, Berlin / Heidelberg / New York 2005, ISBN 3-540-40525-9 .

Web links

Commons : Osler-Knötchen  - collection of images, videos and audio files

Individual evidence

1. ↑ Alphabetical directory for the ICD-10-WHO version 2019, volume 3. German Institute for Medical Documentation and Information (DIMDI), Cologne, 2019, p. 454
2. ↑ JB Farrior, ME Silverman: A consideration of the differences between a Janeway's lesion and to Osler's node in infectious endocarditis . In: Chest . tape 70 , no. 2 , August 1976, p. 239-243 , doi : 10.1378 / chest.70.2.239 , PMID 947688 .

This article is about a health issue. It is not used for self-diagnosis and does not replace a diagnosis by a doctor. Please note the information on health issues !