What exactly is wrong with Coyotes captain Shane Doan? That’s the question hockey fans are wondering these days in Phoenix.

For now, all we know is he’s out with an illness and there’s no timetable for his return.

“He’s still under the weather and he’s still not going to be available for the foreseeable future,” Phoenix coach Dave Tippett said, per NHL.com. “He’s still getting some tests done, so hopefully it’s not long, long-term.”

Doan, 37, has missed the Coyotes’ last two games. The team’s leading goal-scorer (12), his absence is obviously a big one.

Phoenix hosts the Islanders tonight.