So I bought this cactus maybe... 2 years ago? It's been just fine but a few months back it got some weird brown splotches on it. I asked on here about it but no one seemed to know at the time, so I just let it be (assuming it was something like sunburn or something) and the plant has been fine as far as I can tell.
But now I've noticed some sort of fuzz at the base of the cactus, as well as some slight oozing.
You can see it at the bottom of the plant in the creases. I have no idea where it came from. The cactus I got a the same time as this one appears to be fine (although it's an Old Lady cactus so its fuzziness makes it hard to spot problems right away).
Any thoughts? The cactus is a... Devil's Horn or Devil's Tongue or something like that. It's pretty hard to find info about this one. Or at least, I've had a hard time with it.