Hi, I have a small movable lump under the skin near the kneecap-left side of left knee. It doesn t hurt, I can move it pretty far--its just under the skin. I m 45, female, have osteoarthritis (tested for autoimmune disorders few years back with negative result) in my back, neck, knees, hips etc--bilaterally, my right knee needs complete replacement, my left hip is very inflamed due to compensating for the right knee--5ft 8in and weigh 230 lbs. I also have hyper-mobile joints. My left hip used to slide and out pop back in fairly easily but now seems to be slightly off causing the pain groin area/top front of the head of the femur where it connects to the inner pelvis area. Anyway-- this lump is something new and I ve never had anything like this before. It s not warm to the touch. I compare/examine my knees on a daily basis to determine swelling and changes and this could have moved from another area, which is why I just found it today. Drug info-- i take prozac, cymbalta, lamotragine, mobic, and I was on norco for almost 10 years--narcotic free now since March. I don t smoke or drink. I smoked pot a handful of times about 4 years ago (not my cup of tea)--I drink too much coke-a-cola and have never done any other illegal drugs. Bipolar II, major depressive disorder (recurring) and fibromyalgia along with the osteoarthritis. Thank you for taking the time to read and give me some clues what this lump is-ts smaller than a pea, bigger than a bb.