Main features described as symmetrical bradykinesia, predominantly axial rigidity, postural instability with early falls and cognitive decline with prominent features of frontal lobe dysfunction. Prevalence is unknown, but a higher number of cases have been described in the French West Indies. This form of atypical parkinsonism may be related to exposure to tropical plants containing mitochondrial complex I inhibitors. Guadelupian parkinsonism may actually be a tauopathy identical or closely related to progressive supranuclear palsy. Most patients are L-dopa unresponsive. [from
SNOMEDCT_US]