According to this warning, which travels the highways and byways of cyberspace in the form of a graphic, using a laptop across your legs can cause a heat related condition known as “Toasted Skin Syndrome”. The message includes an image depicting a case of the condition described and warns that the condition may finally lead to skin cancer. The message advises people to stop using laptops across their legs and asks that recipients share the information so that other laptop users will also be warned.
In one recent case, a 12-year-old boy developed a sponge-patterned skin discolouration on his left thigh after playing computer games a few hours every day for several months.
"He recognised that the laptop got hot on the left side; however, regardless of that, he did not change its position," Swiss researchers reported in an article published today in the journal Pediatrics.
Another case involved a Virginia law student who sought treatment for the mottled discolouration on her leg.
Dr Kimberley Salkey, who treated the young woman, was stumped until she learnt the student spent about six hours a day working with her computer propped on her lap. The temperature underneath registered 51 degrees.
That case, from 2007, is one of 10 laptop-related cases reported in medical journals in the past six years.
Erythema ab igne, also known as hot water bottle rash, fire stains, laptop thigh, and toasted skin syndrome, is caused by long-term exposure to low-level heat. And, in very rare cases, it can cause skin damage that could result in skin cancer.
The image used in the graphic is featured in a Doctorshangout.com article about Erythema ab igne. The case depicted, which appears to be a quite severe example, was reportedly caused by a heating pad applied for joint pain rather than a laptop.
I could find no information documenting skin cancer cases specifically related to laptop use. And, according to the Sydney Morning Herald, Dr Anthony Mancini, dermatology chief at Children's Memorial Hospital in Chicago notes “it was unlikely that computer use would lead to cancer since it was so easy to avoid prolonged close skin contact with laptops”.
Nevertheless, laptop use can indeed cause toasted skin syndrome as claimed and if you habitually use a laptop across your legs for prolonged periods, it might be wise to take heed of this warning.
Last updated: March 7, 2013