Frankie Muniz Doesn't Remember Being on 'Malcolm in the Middle'

Frankie Muniz's health has deteriorated so badly, he doesn't remember the major events of life ... like starring in "Malcolm in the Middle."

Muniz made the revelation during Monday night's episode of "Dancing With the Stars," where the theme of the night was "The Most Memorable Year."

"Most people would think that my most memorable year would be the year 'Malcolm in the Middle' started because it allowed me to live all these dreams of mine," Muniz said. "I've gotten to really do anything I've wanted to do, but the truth is I really don't remember much of that."

Muniz said he believed his memory loss was related to the "nine concussions and a fair amount of mini-strokes" he has suffered in his life. He added that he's never specifically asked a doctor if the two were related.

He added, "It almost feels like it wasn't me. There's no negative feelings, I just don't necessarily remember."