"Involuntary movements" and difficulty walking is a form of dyskinesia
Paul Joseph Watson - August 8, 2016 
Other questions continue to swirl, including claims that one of Hillary’ “handlers,” who calmed her during the recent interruption of one of her speeches, carries around a an auto-injector syringe for the administration of the anti-seizure drug Diazepam. 
According to Shkreli, the syringe “may be an Apokyn pen, used to treat Parkinson’s,” noting that it was the same color.
http://www.infowars.com/pharmaceutical-exec-hillary-clinton-has-parkinsons-disease/