I had a coiling in 03 shortly after a clipping. I've been having some pretty bad HAs for the last 3-4 months in the back of my head. I had wanted to ask if anyone else has had this. My GP's NP is sending me for a CTA tomorrow and I just do not get tests that are not absolutely necessary (Medicare doesn't pay that well). But I just called my favorite person in the medical world at MGH and she said YES! have the CTA. I know I was told that the coiling CAN be like a pillow you fluff and then the feathers start becoming "unfluffed", so I know I'd rather be on the safe side.