So my question is, and it may seem like a "duhhh" question to those of you with experience, but how do you know whether it's a scab or just a callous??? Will a scab be hard and crusty while a callous is more fleshy feeling??? I'm asking because I've seen dark spots that look like scabs on the bottom of two of my girls' feet. There is no swelling, and no discomfort is evident when they are walking about. I ordered some amoxicillin and some doxycyclene because one article I read recommended either/or. However, I'm worried that I'm being a hypochondriac with my girls. I hate medicating unnecessarily. So will a scab actually FEEL hard and scabby??? Not tough/rubbery like a callous???