I sweat really badly too, always have done but it’s got worse in recent years. Just a 5 minute walk can set if off these days or even when I get nervous or anxious can make it pour down my face which can be really embarrassing. Summer is my worst nightmare, I can get through 2 or 3 t shirts a day as the sweating is relentless although even in winter it’s still a massive problem, I can be shivering with cold and yet still be pouring with sweat.
And like you, I’ve found that any medical professionals I mention it too don’t seem to acknowledge it as much of a problem, I’ve brought it up many times and I generally just get a shrug of the shoulders, I don’t think there’s much they can do about it unfortunately. There are a couple of products which do help, Driclor for body and Odaban for head, they sting a bit when you apply them but they really do help reduce the sweating, they’re the only things I’ve been able to find that make a difference unfortunately.