This is a gross topic, but for some reason if I ever have a scab, I cannot stop myself from picking it! And then when it scabs again, I pick it again... I scraped my knee walking the dog a few weeks ago, and I have picked it probably 5 times now. The worst is that I scraped it right over a spot where I had a scrape 7 years ago. I picked that scab too so I had a horrible scar that was JUST starting to fade... and now I'm starting from scratch! I always regret it but I can't stop!