“She was like, ‘Will you be in my next two videos and be my muse and do everything with me?’ And I was like, ‘Yeah!’ Like, I was 11.”

The singer's diagnosis comes two years after controversy surrounding the depiction of the neurological condition in her film "Music."

In a profile about Griffin, The New York Times noted that Sia had a difficult time dealing with the controversy surrounding her film “Music.”

The two are now expecting their first child together but briefly split during a dark period in the pop star's life.