Hi, I suffer from chronic daily migraines (as diagnosed by a neurologist). Recently, I had a lidocaine nerve block for the occipital nerves; it was the first time I ve ever been pain free--for as long as I can remember, I ve always had a low level headache that sometimes evolves into a migraine. While the nerve block didn t last more than an hour, the experience was extraordinary.Interestingly, my physical therapist has noted something about my external occipital protuberance (previous to the nerve block). It s unusually knobby; it sticks out much more dramatically than the average person s. What s more, a load of muscular tension tends to be centered around that point, as well as a minor amount of swelling near the greater occipital nerves. (I ll add that I don t have all of the symptoms of occipital neuralgia--no burning or tingling.) My question is this: could an external occipital protuberance that s grown in such a way cause any amount of stress on the occipital nerves, therefore triggering a 24/7 low level headache? If you could please give your opinion, I m 21 and I m miserable--it was just an idea I ve had.