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In recent weeks, Hillary Clinton's health has been something of a controversy. Concerns about coughing fits that appear to be more common than the former Secretary of State would like to admit top the list.

So when Clinton arrived in Cleveland and spent the first few minutes of her speech trying to get her cough under control, people noticed:

It got so bad at one point that vice presidential nominee Tim Kaine and another aide got up to help Clinton with a cough drop:

Between sips of water, the struggling presidential nominee attempted a joke:

“Whenever I think about Trump, I just get...allergic.”

In the 63 days remaining before the general election, Clinton's health is likely to scrutinized even more closely. CNN's Dr. Drew Pinsky has raised concerns, and so has Obama's former physician.