Don't pick at the scab, as it might slow healing and cause scars. Watch for infection signs, like pus, bad odor, fever, or redness. Scabs will normally fall off on their own in a couple of weeks. A ...

Some of you may remember my thread detailing a rather stupid crash on my bike. As can be assumed, by now, these things have scabbed up. The abrasion on my knee produced the gnarliest scab of them all.