| Prevalence | 10-20% of all parkinsonism cases |
| Incidence | Estimated 0.5-1 per 1000 per year in exposed population |
| Age of onset | Typically 50-70 years |
| Sex ratio | Female predominance (1.5:1) |
| Time to onset | Usually 2 weeks to 12 months after drug initiation |
| Flunarizine | Calcium channel blocker, used for migraine |
| Cinnarizine | Similar to flunarizine |
| Reserpine | Antihypertensive (historical) |
| Methyldopa | Antihypertensive (historical) |
| Bradykinesia | Slowness of movement, decreased spontaneous activity |
| Rigidity | Increased muscle tone, "lead-pipe" quality, often with cogwheeling |
| Resting tremor | 4-6 Hz "pill-rolling" tremor |
| Databases | OMIMOrphanetClinicalTrialsPubMed |
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