If it painful cracks that sometime bleed, it's probably Stomachtitis. I'm not sure of the spelling, but the cracks can hurt like hell. It's caused by fungus in the stomach. Probably from the acids out of balance. Try acididopolis (sp) etc. For immediate relief use an anti-fungal creme, like something for jock itch. It'll go away quickly. This answer is from hours of research (mine) and doctors who had never heard of it. Hope this helps.