How can I tell what diseases I have?
So I contract a disease, and people are telling me I look sick, but I don't know what disease I have or how it affects me. I don't see it anywhere under 'General Stats'.
How can I tell what disease I've contracted?
Basically, what you can do is go under the main menu, select the magic tab and click Active Effects. If you currently have a disease, the effects will show up here in red (connoting a negative effect). Here are the diseases that you can contract in Skyrim as per the Elder Scrolls Wiki:
Ataxia: Lockpicking & Pickpocket become 25% harder. This disease is contracted from traps and Skeevers.
Black Heart Blight (Dragonborn DLC only): Drains 10 points from carry weight.
Bone Break Fever: -25 Stamina. Contracted from Traps, Bears.
Brain Rot: -25 Magicka. Contracted from Traps, Hagraven
Droops (Dragonborn DLC only): One-handed and two-handed weapon damage is 15% lower. Contracted from Ash Hoppers.
Rattles: Stamina recovers 50% slower. Contracted from Traps and Chaurus
Rockjoint: 25% less effective with melee weapons. Contracted from Traps, Wolves and Foxes
Sanguinare Vampiris: -25% health, progresses to Vampirism. Contracted from Vampires
Witbane: Magicka recovers 50% slower. Contracted from Traps and Sabrecat.
Lycanthropy: Transformation into a Werewolf.
It does tell you the name of the disease in big red letters in the middle of the screen, well it does for me...
Wow yeah....shows how much I'm paying attention. Lol. I'll edit my answer. Thanks for pointing this out.
Dragonslayer's Blessing isn't a disease. It's an effect from a ritual performed in the quest you mentioned. As a werewolf, I am immune to disease, but I received the blessing successfully.