Thanks for the email. I have to tell you that I am trying to picture your problem and I am having trouble understanding what is going on from the description you give. Do you only have problems while "constricting" your arm? Essential tremor is tremor that is initiated by movement and goes away with rest. About 50% of ET cases are hereditary. I think that if you are unable to work secondary to this problem you should see a movement disorder specialist to help you work through this problem. Sorry I can not be of more help. GS