This is kind of a sucky story.  As apart of my job, I run into these types of things all the time.  I think that they can go one of two ways.  Either they're drunk, and annoying and you want them out of your hair as  quickly as possible, or they're having a legitimate medial issue, and you want to help them.  It's tough because you want to thelp them, but with such limited information, it's hard to do so.