I had an attack in my knee for the first time while at work. I had to finish my shift but the pain was so sharp when I got home at 12:30 A.M. I tried to take a shower but could not get my clothes off. So I went to the ER for a shot. Guess what Dr. said there is nothing I can do for you. She said I was not in enough pain. I was but I've been through this before and like to think I'm tough. Well if you go to the ER you have to play it up!