Laptop computer--associated erythema ab igne

Area of Science:

• Dermatology
• Medical Diagnostics

Background:

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

Observation:

• A 40-year-old woman presented with asymptomatic, reticulated skin lesions on her thighs.
• The patient's occupation involved prolonged laptop use with direct contact on her thighs.

Findings:

• The patient was diagnosed with erythema ab igne secondary to laptop use.
• The skin eruption resolved completely within months after ceasing direct laptop placement on the thighs.

Implications:

• Laptop-induced erythema ab igne is a growing concern.
• Clinicians should inquire about exposure to modern heat sources, including electronic devices, in patients presenting with suspicious skin lesions to ensure accurate diagnosis and avoid unnecessary investigations.