Or what would that be called? Pretty much the same things that would usually be considered ableism, but when there’s not a recognised disability involved but just health issue/s (which could be “disabling”).
For example, not believing someone about their health issue, dismissing it or refusing to believe that it impacts their ability to function or can be a valid excuse for things (often solely on the basis that it’s not a recognised disability), blaming someone’s health issue on different things they aren’t caused by (and trying to attribute it to the person’s behaviour as if it’s their fault), and/or claiming that their opinions can’t be taken seriously due to their health problem
Would it be called health-based discrimination or something (despite somewhat mimicking the same mentalities as ableism)?
As I write this, I have some debilitating respiratory infection. It’s absolutely a disability at the moment - even if only temporary (I hope lol). I can barely do anything without assistance but most people wouldn’t consider it a disability like some others.
Now sickness might be a different case than what you’re considering, but I don’t consider it ableism for “healthy” people to not want my company right now. I would probably avoid them, too, if the roles were reversed.