The rapper's admission comes after days of controversy for the star.
A representative for West announced earlier they were pulling the plug on the rest of his Saint Pablo tour dates but did not provide a reason for the cancellation.
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The musician also abruptly ended a concert in Sacramento on Saturday, then canceled a performance Sunday in Inglewood.
Saturday's truncated show became a hot topic on social platforms, as amateur videos circulated of a 10-minute tirade by West about Beyonce, Jay Z, Hillary Clinton, Mark Zuckerberg, the radio and MTV.
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The LAPD and fire department responded to an address on N. Laurel Avenue at about 1:20 p.m. on a disturbance call that police say then became a "medical emergency."
So far, there was no word on West's condition.
The Associated Press contributed to this report.