There might be something there, but I don't think cuts are a very good example. For cuts, the advice is always: close 'em up if they're big, leave 'em alone if

There might be something there, but I don't think cuts are a very good example. For cuts, the advice is always: close 'em up if they're big, leave 'em alone if they're small. Ditto for allergic reactions: many different kinds of reactions will look exactly the same.