Alright so I'll preface this by admitting that yes I am a dumbs but this occurred about four months ago and there's nothing I can do about my actions now. About four months ago I tried shooting klonopin, not sure of the brand or mg, stupid I know yes and reading somewhere that it's not water soluble I used the alcohol from the alcohol swabs you get before a shot (I know I'm a dumbass I get it.) Anyways for about a solid month I had a nasty hot lump under my skin, and the spot of the vein itself was rock hard and tender. Well I decided to be an idiot and not see a doctor about it and thankfully four months later I still have my arm. The swelling and heat is gone now to but I do still have a very small rock hard lump on my vein. My question is this just scar tissue or something possibly more serious? Every now and then the spot gets a little sore, but nothing worse than if I was lifting weights for example. I normally am very good with my shooting practices, I just got sloppy and stupid on that occasion.