I stumbled upon a nasty bug in the game: people think my character is in the last stage of vampirism and won't talk to me... but I am not a vampire (yes, I checked the stats and the look).
The only thing that might have caused the bug might be the fact that I cured a disease at the chapel altar (BTW, it was not the vampiric one). Since then, people have started commenting that I look ill and soon after, the bug happens.
So, I need help. I am on the PC so if there's a console command, I'd happily use it.