Table 1.

Types of tremor.

	Subtype	Occurrence	Physical examination
TYPES OF TREMOR
Rest tremor	Rest/resting tremor	In a body part that is not voluntarily activated and completely supported against gravity	Letting forearms rest on legs or armrest, flexed elbows, with palms in a supinated position
Action tremor	Postural tremor	During voluntarily maintaining a position against gravity	Keep arms and fingers in stretched and flexed positions
	Simple kinetic tremor	During non-target-directed movements	E.g., finger tapping
	Intention tremor	During visually guided movements toward a target at the endpoint of a movement	E.g., finger-to-nose test
	Task-specific kinetic tremor	During a specific skilled task	Specific and aspecific tasks
	Isometric tremor	During isometric muscle contraction	E.g., contraction against a static object, making a fist
	Isometric orthostatic tremor	During stance or stance phase of walking	Standing, walking