Pain below one knee when lying down in the night. thobs & keeps me awake. hurts badly when up to walk or when sitting too long. once i get going, it's gone. no pain when jogging. also have lupus. never had joint involvement. likely from jogging?

Orthopedic surgeon: Internal knee derangement, such as cartilage damage, must be checked for. If the discomfort is in front of the leg below the kneecap, tendonitis or more likely,chondromalacia, which is damage from running and overuse, are a possibilities. I recommend evaluation by an orthopedic specialist. An MRI will probably be recommended. Treatment options will depend upon the findings of your evaluation.