Table 3. Clinical staging of FXTAS.

Stage	Clinical Description
0	Normal functions
1	Subtle or questionable signs such as subtle tremor or mild balance problems and no interference with ADLs
2	Clear tremor and/or balance problems and minor interference with ADLs
3	Moderate tremor and/or balance problems and occasional falls and significant interference with ADLs
4	Severe tremor and/or balance problems with at least intermittent use of a cane or a walker
5	The use of a wheelchair on a daily basis
6	Bedridden

ADL: activities of daily living.