Derek Hough could 'barely watch' seizure scene in Celine Dion documentary

The Dancing with the Stars judge took to Instagram on Thursday to share that he and his wife, dancer Hayley Erbert, had watched I Am: Celine Dion, which was released last week. In his post, Derek explained that he had a difficult time watching the music icon, who suffers from stiff person syndrome, have a seizure because it reminded him of his wife's medical emergency late last year. "A very difficult scene was seeing one of Celine's SPS seizures play out in real time. It was so hard to watch seeing her in pain like that.”