- Risk increases w/age, in particular > 70
- Present w/action
- Most noticeable in hands
- Worse with fine movements
- Exacerbated by stimulants
- Often improves w/use of CNS depressants (e.g. alcohol, benzodiazepines)
- Interferes w/activities of daily living
- More apparent if ask patient to do fine motor: pour water, write signature
- Usually asymmetric
- Worse with arms held out (against gravity)
- Can affect voice, head