I've been on the floor a lot lately, wrapping presents, building toys, etc etc. On both my knees, I have what looks like a spot below my knees. It's red and inflamed, but it does feel like it's just the skin, so not housemaid's knee. It hurts when touched etc, but not the rest of the time - and it's a sharp 'surface' sort of pain.
Have I got ingrown hairs? Or what? And what can I do to fix it? We have wooden floors, so kneeling really hurts now.