I agree you need to get checked out. 10 out of 10 is like passing out pain so it has to be pretty bad and you need to see a dr about it.
Jamie
Ten out of ten is pretty severe and definitely should be assessed by a physician. How long have you had the pain? Have you seen anyone for it? It's in both knees? Anything bring it on? Like running?
Generally if my pain level is a 10, meaning the worst pain I've ever felt, I go to the ER. There may be a serious reason for the pain and it could be an emergency. There are a lot of things like blood clots, aneurysms, and other scary things that can happen in the legs. Definetly call your doctor if you don't want to go to the ER.