I have this problem as well. A while back I had a migraine and my cat scan showed a probable benign skull lesion over my right parietal lobe, and I was told that this likely was NOT causing the headaches. I question if it has something to do with the misophonia, but from what I can see of this part of the brain and the size of the lesion - likely not. It is very annoying nonetheless. I won't discuss my triggers so as not to trigger others or possibly add additional sounds to their list. In fact, I would avoid a support group altogether for this very reason. I do empathize however