The Tremor Rating Scale proposed by Fahn, Tolosa and Marin in 1988 is the most used scale and is made up of three sections:

• Section A takes into account the combination of activation tasks (rest, posture and kinetic tremor) and the different topography according to a 0–4 scale (total potential score is 80).
• Section B evaluates specific functional tasks (handwriting for the dominant side, drawing spirals and lines and pouring water for both hands) according to a 0–4 scale (total potential score is 36).
• Section C is a questionnaire addressing the functional disabilities resulting from the tremor (e.g. speaking, eating, drinking, etc.) according to a 0–4 scale (total score is 28).

A general assessment of the functional limitations is provided by the examiner and the patient at the end of the scale.