Unexplained sweating, blisters

Just before I was about to head to the apartment for a much-deserved night of sleep (I was here overnight last night), I touched Riley's face and it felt very bumpy. We turned up the lights and there are tiny blisters all over his face, neck, chest, and underarms. The doctor on call was paged, he examined Riley, and now we wait. Apparently, he wants the fellow to take a look, but we aren't sure if the fellow will be in sometime in the next five minutes or five hours.

This blistery turn followed a day when mom and dad sensed things weren't right. First, Riley's resting heartrate has jumped between 30 and 40 beats per minute to 110. Second, he has been sweating excessively all day long. I have changed his pillow several times because he keep soaking through, leaving a large sweat mark. Thrid, his cheeks have also been very red today. He has not been red like this since before surgery. All of this together makes us very nervous. But so far no answers, just questions. So we wait and hope the boy will at least get a couple of hours of much needed rest, even if his parents don't.