I am suffering with essential tremors in right hand fingers/hand while writing and aggravated during anxiety or fine work of writing otherwise I am quite normal. It is since last more than 20 years which gradually increased from minor to severe year by year. Now it is very difficult for me to write.  Whatever I write it takes too much time. Letters are being zig-zig. Pen tip pressure is always more than normal. I am even facing problem in putting signatures. Now I am feeling weakness also in muscles of my right hand and very little problem in holding filled glass by right hand. I am insulin supportive diabetic since 2007. Please suggest me some medicines accordingly. Are the tremors curable or not.