Oskar had it a couple of years ago... it's VERY contagious. Oddly, he only got one blister on his hand. When they have scabbed and gone, the doc said that they're usually good. The fluid in them is contagious. I'll pm you a link which is great for all things kids like this. Here is just a bit of what it says... Blisters are red with a small bubble of fluid on top. Occasionally, a pink rash may be seen on other parts of the body, such as the buttocks and thighs. Anyway, will send to you now. Hope it's all over with quickly.