"I'm not gonna go too much into my symptoms or what I have but it's obviously frustrating," Patrick said, according to the Courier-Post's Dave Isaac. "It's not an injury where you're gonna be back in six weeks. There's no time frame to it.
"Obviously I'm hoping to get back soon and I believe I'll play this year so that's something I'm trying to stick with."
Patrick, 21, was diagnosed with the disorder in late September and has been listed by the Flyers as week-to-week ever since. He's started skating again but hasn't been cleared for contact or practiced with the team.
"Obviously I'm not gonna go into too much detail but there's obviously a lot of things I've had to change," Patrick said. "It's an annoying process. It's (crappy). Hopefully, I get back soon."
Patrick, the second overall pick of the 2017 NHL Draft, is in his third NHL season. He posted a career-high 31 points in 72 games last season and is due for a new contract as a restricted free agent at the conclusion of the 2019-20 campaign.
The Flyers currently sit third in the Metropolitan Division with a 15-7-5 record through 27 games.