UK doctors report rare case of child developing 'toasted skin' from prolonged laptop use

Key points

• A boy in mid-childhood presented to a UK emergency department with a 15-centimeter reddish-brown rash on his abdomen, initially mistaken for spontaneous bruising.
• The rash worsened over two weeks, becoming darker and tender, before doctors identified it as erythema ab igne (EAI), also known as 'toasted skin syndrome.'
• The condition was caused by the boy resting a laptop on his abdomen for up to eight hours daily, often while charging, during home schooling.
• EAI is caused by prolonged exposure to low-grade heat that damages superficial blood vessels, resulting in a reticulated, lace-like pattern.
• The rash fully resolved after the heat source was removed, though the case underscores the importance of taking detailed histories to avoid misdiagnosis.

Background

This case aligns with earlier reports from September 2026 highlighting a rise in pediatric cases of erythema ab igne linked to extended device use during home schooling. The condition, while generally benign and reversible, can be misdiagnosed as bruising or other skin conditions, leading to unnecessary medical investigations.

How outlets are covering it

Ars Technica and New Atlas both emphasize the diagnostic journey, noting that the initial misdiagnosis as bruising delayed the correct identification of EAI. New Atlas highlights the broader health risks of prolonged screen time, including impacts on posture and cardiovascular fitness, while Ars Technica focuses on the specific mechanism of heat damage. The Independent’s coverage, though largely obscured by technical data, suggests a broader warning about device overuse in children. All sources agree that EAI is typically reversible but stress the importance of early recognition through targeted history-taking.

Why it matters

As remote learning and home schooling increase, children are spending more time with devices, potentially leading to more cases of heat-related skin conditions. Clinicians must be aware of EAI to avoid misdiagnosis and unnecessary tests, while parents should ensure children use proper ergonomics and take breaks to prevent prolonged heat exposure.

What to watch

Healthcare providers may incorporate questions about device use and heat exposure into pediatric skin assessments. Parents and educators are encouraged to promote ergonomic practices, such as using laptop stands and taking regular breaks, to prevent similar issues.