If MS is remotely possible, you really need to work with an MS Specialist and to confirm that your neuro is or is not. As to Lyme, false positives and poor results from laboratories not experienced with Lyme have been the bane of the Lyme diagnosis. There is a board for Lyme which might help.
I get head pains that are quite intense and very specific in their location. For me, the headaches at the back of my head do not respond to ibuprofen, acetaminophen, or naproxen sodium. My best response is from dark chocolate. I currently have two types I use. I have a Dove dark chocolate which has responded better than the Hershey dark chocolate, but the best one was a Belgian chocolate which my niece sent me. 3 squares of the Belgian and the pain is gone twice as fast as the Dove. It is more expensive, however, so I save it for the really painful times.
For the area of head pain right above the back of my head (mostly top center) I have gotten the best relief from Diet Dr. Pepper. You might try your favorite caffeine as this might work for you.
As to the ear sensitivity, I get pulsatile tinnitus and I also experience times when certain sounds are quite irritating (our household vacuum is one). I have found that 2-3 times a week I need to use my shooter's ear protection. I purchased a pair at the discount store and they are passive. I use them and they really help. They also are great to wear when I nap.
Ear pain/sensitivity and the head pain can be MS related, but they could be other things too.