Weird shit. My right kneecap feels like it got a rugburn, but not all the time, and there's no visible irratation or marks. If I, for example, kneel on the bedsheet as I'm getting into bed, it stings like hell for a second. That I could understand, because it's a firm contact on a fabric surface with maybe a little lateral slippage. But also if I just lightly brush the kneecap with a towel while drying off after a shower. Just a light touch and a big sting! Whatever the degree of contact, the skin on my knee stings like hell for a moment. It doesn't hurt at all usually, only when brushing or contacting something soft. But the constant contact with a pants leg doesn't bother it at all! And pressure or light impacts don't bother it at all. Anybody ever hear of anything like this? What says the hive medi-mind?