I too have every symptom you described except the eye problems. I have been diagnosed with essential tremors and fibromyalgia. My tremors are in my neck. My neck and shoulders feels like rocks. I tried physical therapy and it hurt so bad that I was stiff in my neck for days. I was diagnosed with fibro in Nov 2011 from my rheumatologits, and essential tremors 2006 from my neurologist. My tremors are exactly like you described. I wake every morning with my head shaking, and at night when I'm asleep they stop. I have taken so many meds. Nothing has worked for me. I have seen a neurogolist and am now seeing a rheumatologist. I do hope that there is a cure or at least some type of medication that could stop this shaking. Sometimes I think I'm going crazy. No one where I live (that I know of) has this except me. I am so exhausted at night when I go to bed, where I try to stop the shaking of my head.