I woke up with a really bad pain on my knee and it's been there for about 12 hours now. There are no visible symptoms at all but it's really sore to touch and it's making me feel so sick with worry that I have some skin condition, or a symptom of something deadly. I woke up a few days ago with a horrible feeling in the same knee cap and worried it might be related. It's just the skin that hurts nothing else under. :(