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Related Experiment Video

Updated: Jul 9, 2026

Recognition of Epidermal Transglutaminase by IgA and Tissue Transglutaminase 2 Antibodies in a Rare Case of Rhesus Dermatitis

Recognition of Epidermal Transglutaminase by IgA and Tissue Transglutaminase 2 Antibodies in a Rare Case of Rhesus Dermatitis

Published on: December 15, 2011

Laptop computer--associated erythema ab igne.

Wendy Susser Levinbook¹, Janelle Mallett, Jane M Grant-Kels

¹University of Connecticut Health Center, Farmington, USA.

|November 28, 2007

Summary

Erythema ab igne, a skin condition, can result from prolonged laptop use on the thighs. Discontinuing direct laptop contact led to the resolution of this heat-induced rash.

Area of Science:

Dermatology
Medical Diagnostics

Background:

Erythema ab igne (EAI) is a heat-induced skin condition.
Traditionally linked to hot water bottles or stoves, EAI is increasingly associated with modern electronic devices.

Observation:

A 40-year-old woman presented with an asymptomatic reticulated rash on her thighs.
Initial extensive workup was performed to determine the cause of the eruption.

Findings:

The patient was diagnosed with erythema ab igne.
The condition was directly attributed to the prolonged, direct use of a laptop computer on her thighs.
The rash resolved completely within months of ceasing direct laptop contact.

Implications:

Laptop-induced erythema ab igne highlights the need to consider modern heat sources in differential diagnoses.

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Last Updated: Jul 9, 2026

Recognition of Epidermal Transglutaminase by IgA and Tissue Transglutaminase 2 Antibodies in a Rare Case of Rhesus Dermatitis

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Published on: December 15, 2011

Physicians should inquire about patient habits involving electronic devices to prevent misdiagnosis and unnecessary investigations.

Awareness of EAI from laptops can aid in early diagnosis and management of this preventable dermatosis.