My ss is 7 and barely speaks, he has severe paranoia with sounds and will hold his ears even if he hears beeping, commercials, ticking, and even music.  He does weird things like touch his private area all day long no matter how many times you tell him to quit, we tried making him wear different types of underwear but he still does it and plays with his nipples (sorry i know tmi) so much that one is deformed now.