Report: More than migraines at work in Harvin collapse

SAN FRANCISCO -- Wide receiver Percy Harvin didn't collapse last week as a direct result of a migraine headache, according to Vikings head athletic trainer Eric Sugarman.

In an interview with NBC's Andrea Kremer, which was picked up by Pro Football Talk, Sugarman talked about what he went through after Harvin collapsed on Thursday and called Harvin's migraines "the riddle they can't solve."

Sugarman, who along with team doctors took care of Harvin as he was down on the field, said Harvin's issues with migraines will be a "lifelong fight."

Sugarman could not go too in-depth, according to the story on the PFT website, but he said he is confident the Vikings know why Harvin passed out. The things that led to him being unresponsive included an adverse reaction to medication, dehydration and blood pressure that went too low.

Harvin spent the night in Fairview Southdale hospital but was back at Winter Park, although not practicing, on Friday.