Frankie Muniz has mini-stroke: 'I couldn't say words'

Malcolm in the Middle star Frankie Muniz turns 27 today. And last week, he suffered a mini-stroke.

TMZ reported the news on Tuesday, citing a source was taken to an Arizona ER on Friday when friends noticed he was "acting really weird" -- having trouble speaking and understanding words -- and they got freaked out."

On Good Morning America today the actor/musician explained, "I couldn't say words. I thought I was saying them! My fiance, was looking at me like I was speaking a foreign language."

He was riding his motorcycle in Phoenix on Friday when he lost vision in one eye, he told GMA. His doctors told him he had suffered a mini-stroke. Among people who have had strokes, fewer than 10% are under 45. Muniz says he doesn't drink or do drugs and has never had a cigarette.

"I can't get a deep breath in," he said, adding, "I'm still trying to make sense of it, but happy I'm alive."