Is extremely spicy food unhealthy?

I’m watching some show on Travel called “Extreme Fast Food”... because that’s the channel that’s been on and I haven’t changed it…

They just featured some hot sauce at a place called Cluck-U chicken. They claim it’s scientifically impossible to make a sauce any hotter. They make you sign a waiver before you can try the sauce, which you have to do before you can actually order the sauce.

This seems really unhealthy. How does it effect your tongue? I mean, if a drop of this stuff makes you break out into a sweat and not really be able to think straight (according to the guy on the show that had two drops on a whole chicken wing), how do your tastebuds survive? Are they “desensitized”? Are you doing damage to yourself somewhere? It just seems like it should be rather detrimental… and maybe that’s because I can barely stand the tiniest itty bittiest little spice, but… if the hot sauce you consume can partially eat through styrofoam, what the heck is it doing to your body?