What could cause a hard movable lump under the skin on the forarm?
If it's not painful at all or strangely colored, it's most likely lipoma. They are harmless fatty deposits.
I have found a movable lump about an inch wide under the skin on my upper right rib cage about an inch or so under my breast what could this be?
This could be a cyst. It is what my mother had when she was in her teens, and she had a surgery to get it removed. It is usually a build up of protein or another such substance in the body, and yes, it is movable. It might be round or oval in its shape. I'm no expert in these matters, I am merely speaking from what I have seen. Even my brother had such…