itll wear off on its own, over time. The more you have the faster it will decay. For the rest: spend it in the Research Tree for Metaphysics (via SAIL in the MISC section, or shift-click with your Tech Tablet.)

I don't know how fast it's meant to wear off, but i was building in one spot for like, 10+ minutes and still no loss of Madness. Even playing for 30+ minutes had no effect. Maybe it's glitched on my end.

Kinda drove me mad (heh). So i kinda put together a rudimentary solution, since it doesn't seemingly drop (in and out of Admin mode), i tried to spend it all in one go so i got to 0.

My initial goal was to make that slime fellow from the buidable madness-related Tome crafting station, since he's a easy 20 Madness (although the other parts where harder to attain, but an Gene spicing thing and a Extractor and a lab guide thing telling you which thing you need for what processed/end-item worked).

Along the way i needed like, 620 Madness to unlock that research to make the slime guy, and by sheer miracle, i *exactly* ended up with 620 and got it to 0, making the very annoying madness effects stop (even though i was in admin mode at the time, i guess the research tree consumes it regardless of admin mode - not that i mind in this scenario).
As for how i got that much madness, i simply made those mad scripture things from the Tome Dias and used them to attain more until i had enough.

Well, spending it worked in any case. Tried hiring the highest/3rd tier phyciatrist or whatever you spell that, didn't work, contract was removed but no crew added (on a ship, with and without admin mode). Tried the 2nd tier one, no effect. The worst tier: actually worked! Hired. No effect in stopping the constant annoying heartbeats, though.

Ah, if i knew what item was the Madness currency, i could've given myself juuust enough as admin and skipped a whole load of annoying steps, but eh... I dunno if this would be of any help to those seeking to remove stuck madness, since FU has way too many crafting stations.

Looks like the latest update changed some of the random negative Madness effects to make the random Madness gain/loss much less extreme, so this shouldn't happen in future - at least not from standing still.

I seem to be able to hold onto any madness. I'll get it up to around 100, and the next time I check it's bled down to something like 50 or 60.

Originally posted by Op_Gheist01:

I seem to be able to hold onto any madness. I'll get it up to around 100, and the next time I check it's bled down to something like 50 or 60.

That's the idea. It constantly degrades. You need to intentionally seek it out, or be careless, to farm it. No easy way for madness, sorry :)