# Fox's sign

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**Fox's sign** is a [clinical sign](/source/Medical_sign) in which [bruising](/source/Bruise) is seen over the [inguinal ligament](/source/Inguinal_ligament). It occurs in patients with [retroperitoneal](/source/Retroperitoneum) bleeding, usually due to [acute haemorrhagic pancreatitis](/source/Acute_pancreatitis).

Named after London surgeon John Adrian Fox after he reported 2 fatal cases of non-traumatic ecchymosis in the upper outer aspect of the thigh as a diagnostic sign of retroperitoneal haemorrhage.[1]

Often incorrectly eponymously attributed to the American dermatologist [George Henry Fox](/source/George_Henry_Fox) (1846–1937) despite JA Fox's paper being published in 1966.

## References

1. Fox JA (Mar 1966). "A diagnostic sign of extraperitoneal hemorrhage". *Br J Surg*. **53** (3): 193–5. [doi:10.1002/bjs.1800530310](https://doi.org/10.1002/bjs.1800530310). [PMID 5907449](https://pubmed.ncbi.nlm.nih.gov/5907449)

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Adapted from the Wikipedia article [Fox's sign](https://en.wikipedia.org/wiki/Fox's_sign) by Wikipedia contributors ([contributor history](https://en.wikipedia.org/wiki/Fox's_sign?action=history)). Available under [Creative Commons Attribution-ShareAlike 4.0 International](https://creativecommons.org/licenses/by-sa/4.0/). Changes may have been made.