Hello, the last few months my knee has been stiff and hurting. Sometimes it feels like something is grinding inside my kneecap. It s like growing pains in that I can t exactly explain it, but I m 27 and haven t grown in quite some time. I ve started running, but that doesn t help. Massages feel good, but don t fix it. The knee turns super red in the shower. It feels slightly better when I m standing or laying down. I have started moving around more at work but no change! There hasn t been an injury, but I m a drummer and I notice that it hurts more after I play.