Laptop heat exposure causes skin lesions in adolescent

A medical case documented in the British Medical Journal (BMJ) has highlighted the risks of prolonged heat exposure from laptop computers. An adolescent presented at Leicester NHS Trust University Hospitals with unusual, lace-like skin lesions on the abdomen. Initially mistaken for spontaneous bruising or trauma, the pattern was later identified as erythema ab igne.

The condition was caused by the patient using a laptop directly on his abdomen for up to eight hours a day, often while the device was plugged into a power source. Medical experts noted that erythema ab igne occurs when skin is exposed to low-intensity heat, typically between 43 and 47 degrees Celsius, over a long period. This temperature is insufficient to cause an acute burn but is high enough to damage tissue through chronic exposure.

Doctors emphasized the importance of recognizing these patterns to avoid unnecessary medical testing and misdiagnosis, as the patient's initial symptoms did not indicate internal injury or systemic illness.