It looks like your sperm count isn't the only thing you have to worry about when resting your laptop on your lap. According to medical reports , repeated exposure to hot running notebooks can lead to "toasted skin syndrome," which is a reddish-brownish rash that can also result from prolonged exposure to heating pads.
One of the most recent cases involves a 12-year-old boy who suffered the discoloration on his left thigh in a matter of months after playing PC games for a few hours each day.
"He recognized that the laptop got hot on the left side; however, regardless of that, he did not change its position," Swiss researchers said in an article published today in the journal Pediatrics.
According to an AP report, there have been at least 10 laptop-related cases reported in medical journals in the past six years. In every case, it's the same thing -- the laptop doesn't run hot enough to actually burn, but can cause permanent skin darkening. And in some rare cases, Swiss researchers say it can also cause damage leading to skin cancers.