Tandem Gait Ataxia in Atypical Parkinsonism Tandem ataxia is more common in atypical Parkinsonism than PD and maybe an early discriminator. This lady has PSP. Dr. Boby Varkey Maramattom @bobvarkey #Tandem #Gait #Ataxia #Atypical #Parkinsonism #clinical #video #physicalexam #neurology #PSP