I have had essential tremor for over 20 years, but I could live with it easily until about 3 years ago (at 70). Suddenly it cam on like gangbusters - fingers, hands arms, even my legs got into the act occasionally. For me it is an inherited thing - but I saw a neurologist to rule out other causes.
Now I take a medication that helps lessen it, but it is still a trial a lot of days.
Thankfully, it is not as sign of something worse, but my typing, handwriting, sewing and painting all have a "new look" on bad days.
Sue