Below you'll find a list – and subsequent descriptions of - all the debilitations in the game. Most of them are fairly self-explanatory and will go away on their own.
Comes in four flavors; Defense, Magick, Magick Defense and Strength. Lowers that particular attribute, causing you to deal less or sustain more damage.
The effect for this affliction is kind of neat, even if you will learn to hate it, eventually. You'll most likely see this affliction when Goblinoids chuck vials of crap at you. When blinded, the screen is mostly obscured by roiling black mist. Wise gamers can still function (albeit at much lower combat effectiveness) by using the mini-map to maneuver, and the darkness isn't all-encompassing.
This rather inelegantly named debilitation nonetheless is what it says-you've been immolated and your health will continuously drain for a set duration. Fire attacks of all sorts set this debilitation.
Lowers all your attributes temporarily. The Succubus can inflict this debilitation with her song.
The most common and least worrisome debilitation, drenched characters are... well, they're simply wet. It'll slow you down a bit, and if you have a lantern equipped, it'll douse it (simply unequip it and re-equip it to restore functionality, or just wait.) On the other hand, if you're immolated, rolling in some water will put out the flames. You cannot become immune to Drenching.
Perhaps the most obnoxious debilitation in the game, it's uncommon throughout most of the early part of the game, but towards the end of the game you'll start encountering foes fond of using petrification attacks, including Gargoyles, Evil Eyes, and Cockatrices. Since it's ultimately fatal, it's worth gathering resistance to it. It can be cured with High Voidspell, Secret Softener, and Cockatrice Liquor, but there's plenty of gear that grants resistance. In fact, it's one of the few things that should influences your attire... besides defense and simple aesthetics.
A common affliction caused by many creatures-Snakes, Giant Spider, Saurians, to name a few. Poison deals twenty points of damage every few seconds, for a variable duration.
Despite what Pawns scream, possession resistance does not prevent possession by Phantoms, Phantasms, and Specters. What is it, then? Well, a very few creatures (members of the dragon family) can - when they grab hold of a Pawn - attempt to dominate it mentally. This resistance prevents it. You can also free them by smacking the offending reptile's naughty hand, which greatly mitigates the need for possession resistance. If only it actually prevented possession from incorporeal beings...
Prevents one from casting spells (but doesn't prevent non-magickal skills). Not good for Mages and Sorcerers.
Prevents the use of any skills, magickal or physical. The Drake's shout can inflict this debilitation.
One of the more common debilitations in the game, Harpies and Snow Harpies love circling overhead while singing, putting those underneath to sleep. Chimeras and Gorechimeras also are fond of using sleep. Granted, sleep is usually more annoying than harmful, it's still annoying and worth resisting.
Makes you more vulnerable to fire attacks. Goblinoids are fond of throwing oil at you, which inflicts this status.
Torpor, n. 1) A state of being dormant or inactive; temporary loss of all or part of the power of sensation or motion; sluggishness; stupor. 2) Dullness; apathy. ...it means you've been slowed. You'll move and attack much slower than normal. It's fairly uncommon, but Giant Spiders can inflict it by spitting web at you.