Sensitive 11 yr old son

My son has always been extremely sensitive and cries very easily and clearly cannot control himself. He gets extremely upset when he doesn't get a perfect grade in school. He reads books all of the time rather than wanting to play with his brother. Is obsessed with coin collecting. Seems to be very lazy with hygiene. Over all appears to look depressed a lot of the time. He is hard on himself and gets anxious when being around people that he has to talk to. Never wants to show affection. Very book smart, he will remember things he read a long time ago. Just started saying recently that he doesn't like the "feel" of certain things he touches or that touch him. He acts very oddly and laughs at things that aren't funny