Ok, I'm going out on a whim here by responding to this particullar subject, but I think someone should tell you something not so frightening. You didn't really state what you 'used', but I KNOW coke isn't the only thing that causes the "nose debris", as i like to call it. 'Speed' is also reputable at causing this. Smoking it or blasting it, even, will usually bring it on. And no, the whole scabby, 'rotted' like nose thing, 9.5% outta 10, never turns into an infection. I DO KNOW what I am talking about and can honestly say you really have nothing to worry about. Pickin' at it, which tends to be the main source of it not healing, is kinda hard to avoid since there's so much crap in there that makes it hard to breathe, and not to mention, feels extremely uncomfortable & sometimes painful. If you stay clean, like truly clean, it'll go away in about a month. If you do end up 'using' again, and the "nose debris" continues, try applying, Lightly, no more than twice a day, Johnson & Johnson's First Aid Cream. (That's what it's called, plain & simple) It's cheap, it works, and your little nose will be so much more happier. Good luck to you!