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Erythema ab igne - Skin
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Erythema ab igne - Skin

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Contributors: Noah Craft MD, PhD, Lindy P. Fox MD, Lowell A. Goldsmith MD, MPH, Michael D. Tharp MD
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Synopsis

Erythema ab igne (literally, "redness from fire" in Latin) is a disorder of hyperpigmentation caused by long-term exposure to heat. Prolonged use of hot water bottles, heating pads, electric blankets, or sitting near a wood stove or fireplace can trigger the formation of this disorder. Erythema ab igne has reportedly been caused by sitting for long periods with a laptop computer on the lap. Although burns do not occur from the heat exposure, the skin develops a coarse pigmentation consisting of mottled patches of pink, purple, and eventually brown from melanin deposition. There may be pruritus or mild burning paresthesias. The resultant pigmentation changes can be permanent, and, currently, there is no effective treatment for them. The disorder is more common in women. Chronic exposure to infrared radiation in the form of heat may predispose to the development of squamous cell carcinoma.

Skin over an implanted spinal cord stimulator may show changes with erythema and telangiectasia that have been called "reticular telangiectatic erythema." It is often related to localized heating due to a defect in the implanted device. 

Codes

ICD10CM:
L59.0 – Erythema ab igne

SNOMEDCT:
238510001 – Erythema ab igne

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Last Updated: 11/19/2013
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Erythema ab igne - Skin
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Erythema ab igne : Hyperpigmented patch, Mottled configuration, Reticular configuration, Prolonged heat exposure
Clinical image of Erythema ab igne
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