Why do I NEED to be touched?

It's not a want, and I'm not lying. But jeez....it's irritating. I seem to need to be physically touched, whether in a sexual manner or not. If I'm not, my body begins to physically ache...mostly on my arms. I also get irritable. Thing is...I don't know why. Please help me to understand why this happens to me. And please, no "pretty" answers like "We all need to be touched." and "You need love."....it's not like that. This is a physical thing that is happening to me. It keeps me awake at when I'm trying to go to sleep...I actually have to touch MYSELF (sexually or not) all over to heat my body up with friction and release endorphins(?) But...why? Is this part of being a sexually active young human male? I ask because I hear males are more sexually active than females.