Working with your laptop computer on your lap can cause Toasted Skin Syndrome, according to a new medical study.
Swiss researchers at University Hospital Basel say a 12-year-old boy developed a sponge-patterned skin discoloration on his left thigh after playing computer games a few hours every day for several months.
"He recognized that the laptop got hot on the left side; however, regardless of that, he did not change its position," the researchers wrote in an article published Monday in the journal Pediatrics.
The condition is usually harmless, but it can cause permanent skin darkening and in rare cases cancer.
"There are some rare reports of skin cancer developing within this eruption, although that is far from the rule," Kimberly S. Salkey, assistant professor at the Eastern Virginia Medical School said.
Health experts suggest using a carrying case or some other type of heat shield under your computer if you're going to put it on your lap.