Hossa was not faking.
The Athletic has an amazing interview with Hossa where he details what he went through.
If you have a subscription, here’s the link -
'Body says you have to stop': Marian Hossa speaks about the...
“.....But during the 2016-17 season, he didn’t care what people thought. The eczema was the worst it had ever been. It covered the front and back of his body. It leaked pus. It bled. It ended up on his bedsheets.
“After the yellow and then the blood and then after it, everything is all over,” Hossa said. “The wife washing the sheets all the time. She’s not happy too. So there’s different things. It didn’t just affect my hockey life, but my life away from hockey. I said I think this is putting to a different level where this is not right.”
Hossa tried so many different things to minimize the effects. Even if it was a long shot, he was willing to give it a try.....
.....When Hossa returned to Chicago from the tournament, he went to see another specialist. This one recommended taking Cyclosporine, an immunosuppressive drug.
“That’s how I survived the year,” Hossa said.
The medication would also spell the end of his career.....
....
The drug can be so dangerous the FDA has given it a black box warning. Some of the possible side effects include an increased risk of serious infections, higher blood pressure, kidney disease, tumor and skin cancer. Hossa went to Northwestern Memorial Hospital for testing every two weeks.”
And here’s a summary on a free site (though it’s nowhere near as good as the Athletic article, and doesn’t do nearly as good a job conveying what he went through)
Marian Hossa Opens Up About Skin Condition Forcing Him to Retire
After I read what this guy went through, i’ll never again question him retiring.