Laptop computer induced erythema ab igne: a new presentation of an old disease

Abstract

Erythema ab igne is a condition characterized by skin changes due to chronic exposure to moderate temperature. We describe a female patient with continuous use of a laptop computer on exposed legs for 6 months and consequent development of reticulated hyperpigmentation at the area. Histopathological examination revealed epidermal atrophy, collagen fragmentation, and vacuolar changes in the basal layer, among other signs. We consider this case to be a modern cause of erythema ab igne.

Erythema Ab Igne: A Rare Presentation of Toasted Skin Syndrome With the Use of a Space Heater

“…Although it has become less common since the availability of the central heating system, some continue to experience it from traditional sources. Interestingly, this rash has found its way back into literature and started to gain attention when it was described as laptop-induced erythema ab igne noted on a patient’s thighs following prolonged exposure to heat emanating from the laptop [ 9 , 10 ]. Similarly, it is noticed in those using sauna belts for abdominal obesity and those using a heat source for the management of pain [ 11 ].…”

Vasculitic Rash or Something Simpler

“…However, heating pads and laptop computers are the current leading causes of erythema ab igne lesions. Differential diagnosis of this condition includes livedoid vasculopathy, cutaneous polyarteritis nodosa, isolated cutaneous vasculitis, livedo reticularis, and livedo racemose 1–3 …”

“…Differential diagnosis of this condition includes livedoid vasculopathy, cutaneous polyarteritis nodosa, isolated cutaneous vasculitis, livedo reticularis, and livedo racemose. [1][2][3] In conclusion, children presenting with localized vasculitislike rashes should be questioned for repetitive exposure to a heat source before a workup for vasculitis is done. Such cases emphasize the importance of broadening the differential diagnosis based on the geographic location and habits of the patients.…”