Essential Tremors have their own interesting set of problems. In Parkinson's, the tremors would affect you when you're at rest, while Essential will show up only when you're actively doing something, like eating. I have difficulty holding utensils holding a cup to drink from (I've been using straws!). Essential will eventually get worse and could affect my speech and head movements differently than Parkinson's will. I've been put on some new medicine for it and just after the new year, I'll get a C-T scan and a nerve conductivity test (OH JOY!) Trust me to find a weird disease!