hello, so off and on for close to a year now I experience random raised bumps on my stomach that itch sometimes and other times don't. After a few days I will either get more, or they will go away then eventually come back again. The bumps are usually bellow my belly button to the left a little. Sometimes they appear higher up but mostly below belly button. Even when there isn't that many bumps, or they arnt raised anymore, there are still red dots there. What could this be? Help!