Erythema ab igne

Synonym(s)

Erythema ab igne elastosis; ephelis ab igne; erythema a calore; toasted skin syndrome

Definition

Changes in the skin caused by chronic and repeated exposure to infrared radiation

Pathogenesis

Unclear mechanism; repeated external heat exposure in the range of 43-47°C resulting in histopathologic changes similar to those seen in solar-damaged skin

Clinical manifestation

Reticulated violaceous and hyperpig-mented plaques, most common on the legs of women; poikiloderma occurs with severe long-standing disease

Differential diagnosis

Livedo reticularis; poikiloderma of Civatte; poikiloderma atrophicans vasculare; mor-phea; livedo vasculitis

Therapy

Nd:YAG, ruby, or alexandrite laser References

Page EH, Shear NH (1988) Temperature-dependent skin disorders. Journal of the American Academy of Dermatology 18(5 Pt i):ioo3-ioi9

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