My son went through this after getting tubes, and at age 6, he is just starting to phase out of it a little bit. I even took him to an audiologist because his reactions were just so crazy. Because he could hear almost nothing before tubes, after he got them, loud noises were overwhelming to him and drove him nuts. For years we couldn't get him into a public bathroom. Lots of people in a room would have him begging to leave. Unfortunately for him, it became a learned response. He had heard the loud noise that that situation produced before and he was unwilling to put himself through it again. Fortunately a caring kindergarten teacher was able to help him through most of it, but he still hates loud noises. The audiologist said exposure helps and eventually he will learn to deal with it.