My two year old daughter has been running a fever at night for like 2 or 3 nights along with a cough. Her father and I are able to keep the fever down during the day but it spikes again at night. Well I took her to the emergency room yesterday because she wasn't feeling good and looked horrible. They told me that she has hand,foot and mouth disease which is a viral infection and I have no idea how she even got it. I was just wandering about how long does it take for the infection to clear up?