Bizarre Rash Was Thought to Be a Liver Injury, But It Was Caused by a Common Habit
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A teenager’s mysterious abdominal rash initially baffled medical professionals who suspected a serious liver injury. The boy presented to an emergency department with unusual bruising and discoloration across his abdomen that had appeared without any apparent cause. Despite thorough testing including X-rays and CT imaging, doctors found no evidence of trauma or underlying organ damage.
The condition worsened over several weeks, prompting a second hospital visit. During follow-up questioning, the key detail emerged: the boy had been spending up to eight hours daily resting a laptop on his abdomen while attending school at home. This seemingly innocent habit had triggered erythema ab igne, commonly known as “toasted skin syndrome,” a condition caused by prolonged exposure to moderate heat sources. The distinctive lace-like pattern on the skin and absence of sharp pain had made the diagnosis difficult to identify initially.
Erythema ab igne develops from heat exposure below the threshold of thermal burns, meaning victims typically experience no immediate pain signals. Beyond laptops, the condition can result from hot water bottles, heating blankets, and other heat-emitting devices. Once the boy stopped resting the device on his skin, the rash gradually resolved completely.
Medical experts warn that diagnoses linked to laptop use may increase as more people work and study remotely. While symptoms typically fade after heat exposure ceases, prolonged cases carry potential risks, with emerging research suggesting possible links to skin cancer development.
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Originally reported by Sciencealert →
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