Erythema ab igne
A common rash characterised by reticulated telangiectasia and hyperpigmentation caused by repeated exposure to a heat source such as a hot water bottle or laptop. It is present in up to 3% of an Italian population.
An area of reticulated erythema that blanchs is rather suggestive. Consider:
Malignant change, as for other sites of constant trauma, is possible after decades of exposure. Squamous, merkel cell carcinomas and cutaneous lymphoma have been described.
- ↑ BBC image of eryhema ab igne attributed to laptop
- ↑ Beleznay K, Humphrey S, Au S. Erythema ab igne. CMAJ : Canadian Medical Association journal = journal de l'Association medicale canadienne. 2010 Mar 23; 182(5):E228.(Link to article – subscription may be required.)
- ↑ Siragusa M, Schepis C, Palazzo R, Fabrizi G, Guarneri B, Del Gracco S, Spada RS, Ferri R. Skin pathology findings in a cohort of 1500 adult and elderly subjects. International journal of dermatology. 1999 May; 38(5):361-6.
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