WHITE PLAINS, N.Y. — For weeks, Hillary Clinton has dismissed questions about her health as little more than a conspiracy theory.

She’s called the claims part of a “wacky strategy” cooked up by rival Donald Trump as he embraced what she says is an “alternative reality.”

Those concerns are now unavoidable.

That’s because of Clinton’s abrupt departure Sunday from a 9/11 anniversary ceremony in New York. And because of a video showing the Democratic presidential nominee staggering and eventually slumping forward before being held up by three people as she was helped into a van.

The damage was compounded by the nearly eight hours of silence from Clinton and her team about the health scare, as well as the Sunday evening disclosure she had been diagnosed on Friday with pneumonia.