Source: EXTRA

“American Idol” rocker David Cook was hospitalized after last night’s show, a source confirms to People. The guitar-slinging hunk was reportedly treated for high blood pressure and sent back home to the “Idol” apartments.

Cook, one of Simon Cowell’s favorites, soared through Dolly Parton’s “Little Sparrow,” but soon after, he went missing from the bleachers as the rest of the contestants watched Jordin Sparks and Chris Brown’s live performance.

TMZ.com says an “Idol” executive explained that David has been an emotional wreck because his cancer-stricken brother is not doing well.