Hi. My 4 year old just started to get all of these raised red bumps (circular but not symmetrically) on his ankles and feet , behind his knee caps, a couple on his butt and one on his shoulder . At first, I thought they were mosquito bites, but I feel like every time I look, he gets another one. They are itchy. The only thing he has eaten in the past hour has been some cucumber slices that I had in a ziplock bag.