In June I went to the emergency room because I had a knot in my butt crack right around the tailbone that was making it very difficult to do anything. It was diagnosed as a pilonidal cyst. When going to a follow up physician, I was informed that it may not have been a pilonidal cyst but to come back if there was still a knot. I have had shooting pain that is not constant but occurs for a brief time in that region. I have a hard bony knot on the end of my tailbone that used to not be there and a knot around where the small incision was made when the emergency room lanced it. Both are extremely sensitive to touch and pressure. When I went back to the doctor he said there was no knots and that the knot on my tailbone was just my tailbone but I could get an xray if I liked but it would not tell him anything. I would like to know why I get pains back there from time to time?