Tremor is a rhythmic shake you can’t ignore. It shows up when muscles work or rest, and it usually starts small—then steals the spotlight.

The first tell is a fine bob in the fingers. You notice your hand wiggles while pouring coffee, and the stream turns into tiny splashes.

Writing changes next. Letters become shaky and larger, and the pen digs harder into the page.

Rest tremor appears when the hand is still. You sit watching TV and see your thumb and forefinger rolling a pill that isn’t there.

Action tremor jumps out on purpose. Lifting a spoon, threading a needle, or sipping soup turns into a mini earthquake.

Voice can quiver. Your speech sounds like you’re cold, even on a warm day, and the last word of every sentence wobbles.

Head nod or chin bounce may join in. The shake is side-to-side or up-and-down, and it stops when you lie flat.

Stress or caffeine doubles the beat. The shake gets faster and bigger the moment you’re watched or rushed.