There's one small lump that keeps on appearing in the anus area from the outside. So it just becomes so painful to pass the stool. The lump automatically becomes bit big at times and then at times it disappears. So if the small lump is present on the opening it does pain a lot. Also I'm a patient of Ulcerative colities. So does this have to do anything with uc ? Or is this some kind of other thing ? At times I bleed when I pass stool. I'm attaching a pic kindly let me know if it's just normal.