Back of head headaches

I have these "burning" headaches that start across my shoulders and up the back of my head. Sometimes I wouldn't care if someone blew my brains out. I prefer ice packs to the back of my head and shoulder. I know that you are supposed to just use it 20min. on per hour but frankly I have spent hours on it at a time just to get some relief. Do you have any pinched nerves? Do you have any muscle relaxers or something like Neurontin?
Nurse2

I would love to know what causes this... babesia or bartonella? that would help w/ deciding which medicine to stay on or not... i have them awful sometimes .. its like a bad stiff neck and a headache in the back of my head and base of my skull... i use a heating pad and its always worse in the morning and then at night