I noticed yesterday that the back of my daughter's hand had a reddish, bruise-like mark, and today, I just noticed that the redness has spread to most of the back of her hand, and there is some swelling. Does anyone have an idea what the cause could be? She says that it doesn't hurt, and doesn't remember bumping her hand anywhere. It doesn't seem to be an infection, because I don't see any sign of a cut on the hand.
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