YES!!!!! I get this every single time which is why I try to limit it as much as possible. I don't sweat much either, so that's lucky. I get the same after a bath (worse).

So I obviously do definitely have mercury poisoning, or something similar. Shower or bath, I cannot have it too hot and have to keep it as short as possible. I am debilitated after a bath, and sickly after a shower.

I used to really enjoy bathing and now I HATE it and try to get it over with. So I stick to showers now, but again still feel sickly after it.

I have reached a point where I get out and have to lie down, I can hardly function. I never really mentioned this much because I just didn't understand it, so I'm not alone in this either!