It is about the size of a pea. It is about the size of a pea and looks almost blue or black in colour. Most of these haematomas do not need any treatment. It raises a pea-sized swelling right on the margin of the opening of the anus.
It is very tender at first, because the skin is stretched over it in this very sensitive region, and when it is further stretched by passing a stool, it is even worse. Answers to specific problems may not apply to everyone. This is sort of an embarrassing question.