A rep for the star said she's been treated for extreme exhaustion, dehydration and more ...

Megan Thee Stallion thought she 'was gonna faint onstage' during a performance of 'Moulin Rouge!' on Broadway.

Fainting or blacking out, also known as syncope, is a temporary loss of consciousness due to insufficient blood flow to the brain. Dreamstime/TNS You may have heard that people who feel faint should ...