I'm not using it for anything like that, mostly because the benefits probably won't outweigh the negatives and also a little because I feel you must sometimes not pursue every subsidy you can get just because you can from a moral standpoint.
At the same time, I think it's annoying the hyperhidrosis doesn't get the acknowledgement it should get as a serious disability, also because this is one of the reasons there is way too little research into HH.
I guess it would have been possible for me to get some extra 'school subsidy' had I really tried, I know of people here with Astma who get more subsidy because of their disease, eventhough (and I know I have to be careful here, but still) in my judgement they can live pretty normally.
It might have paid for some botox treatments I have been paying for myself, so I would definitely feel I was entitled to it, but the inevitable hassle was just not worth it to me. And obviously, the system is different here so in the US there is probably more to gain (scholarships are way more substantial in the US, cause here in the Netherlands, schools and college are heavily subsidized as it is already and there is no such thing as private schools, or at least not ones that are relevant, so you're not directly paying a lot for them as it is, except through rediculous taxes indirectly).
I don't know that much about the system in the US, but I would imagine that if you could find a medical professional prepared to provide you 'disabled status' it would be hard for authorities not to give you some benefits...
For me now, I could apply for a partial disabilty fund probably (so that say if you were judged to be 20% disabled to work, I could work a day a week less and get compensated by the state for the lost revenue that would bring), however, I probably wouldn't then be able to get a respectable job at all, so I'd probably still be worse off if I did. Also, I'm not actually unable to do most jobs (except maybe be a sales man or representative who's job is to shake hands and not sweat too much), the biggest way HH affects my work (maybe) is that I can't have that much fun outside work, providing less incentive to make great deals of cash, because I wouldn't be able to get lots of quality talent (ie chicks) anyway, which would be more or less the only reason to work extra hard in the first place (right?).