Generally speaking, it’s expected that a child, especially a young child, will get upset when leaving his or her parents, whether it’s for school, daycare, or a short time with a babysitter. In fact, as a parent, you may also feel a twinge of that same sadness and worry the first few times you have to leave your child in the care of someone else. So what factors elevate a child’s seemingly natural reaction to being separated from a parent to a more serious anxiety disorder?