About a month ago I started to get these a little bit smaller than dime type bumps (some even tinyier) on my stomach. They seem to be a lighter red and itch a little but not to much. They have now traveled up my neck, armpits, and a couple on my one arm. There seems to be this dry little patch in some of them. Is this an allergic reaction? Or some type of rash? Ask if you need more details or pictures. Please help.