"I was in the hospital last Friday. I suffered a 'Mini Stroke', which was not fun at all. Have to start taking care of my body! Getting old!" Muniz, who turns 27 on Wednesday, tweeted Tuesday morning.
The actor, who recently appeared as himself on ABC's Don't Trust the B---- in Apartment 23, did not provide further details, but TMZ.com reports that Muniz was taken to an Arizona emergency room after his friends noticed he was having a hard time understand words and speaking.