What is wrong with Hillary?

http://www.nbcnews.com/politics/2016-election/hillary-clinton-struggles-fight-back-coughing-attack-n643026

What would make Hillary Clinton cough like that so much?

Hillary Clinton Fights Back Coughing Attack

nbcnews.com

 

Hillary Clinton struggled to fight back a coughing fit while campaigning in Cleveland, Ohio, on Monday. Hillary Clinton struggled to fight back a coughing fit while campaigning in Cleveland, Ohio, on Monday.

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