Hello, I am a 29 years old male suffering with knee pain (probably joint pain) (left leg) for the last couple of weeks. Unable to sleep/sit or even stand. It is also observed that both my legs didn't have any strength neither in muscles not in the bones. Didn't use any medication so far, however, tried home remedies like soaking legs in salted Luke warm water etc. Please suggest what to do. PS: I've been smoking for almost 10 years now and for the past 5 or 6 years smoking more than a pack/day.