"Percy Harvin's health has taken another turn for the worse.

The Minnesota Vikings' leading receiver was at the team's Winter Park practice facility on Monday, and interim coach Leslie Frazier said the migraine that sidelined Harvin last week had cleared.

However, Harvin apparently had a setback in the next 48 hours, and he wasn't on the field when the Vikings resumed practice on Wednesday.

"My understanding of the migraines is they can come and go," Frazier said before practice. "So, we're just being precautionary with Percy as we're trying to get him ready and hopefully, take care of some things that will help him long-term. It will be a day-to-day situation as to whether he's out here or whether he's not out here.""