Hi, I have a 3 year old son who is 34 lbs. and around 3 5 feet tall. He keeps getting these reacurring lumps in his head about the size of a quarter that bring on a runny nose as well. There may be up to 5 or 6 at a time. They disappear after around 2 days and will occur again within about a week. I am so confused as of what this could be. We took him to his dr. and he said that it may have been from a previous infection that his body had and it made his lipnoids swollen, but they are back and that has been only a week and a half ago. What could this be please help.