Hossa has reportedly been on medication to neutralize the allergy, but doctors have long-term concerns about his health if he continues to take it, which could lead to his retirement.
The Blackhawks later confirmed Hossa will not play next season as he deals with the problem. Hossa issued a statement in the team release, which reads in part:
"Over the course of the last few years, under the supervision of the Blackhawks medical staff, I have been privately undergoing treatment for a progressive skin disorder and the side effects of the medications involved to treat the disorder. Due to the severe side effects associated with those medications, playing hockey is not possible for me during the upcoming 2017-18 season. While I am disappointed that I will not be able to play, I have to consider the severity of my condition and how the treatments have impacted my life both on and off the ice."
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