Harry Stiles of One Direction may have felt sick during One Direction's show in Pittsburgh on Monday. A fan took a video of Harry running behind some set pieces on stage in the middle of a song and and bending over as if throwing up. The singer was then spotted with a towel and a bottle of water. Styles later returned to he stage and apologized to the crowd for his absence, but later rushed off the stage again.

See for yourself here!

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