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.
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.
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.