Lupus Support Group
Lupus is an auto-immune disease in which the immune system cannot distinguish between threats (like viruses and bacteria), and healthy cells and tissue. As a result, the body produces antibodies that inflict cell damage, most commonly targeting joints, skin, kidneys and the nervous system. Join the group and find support for coping with lupus.
http://www.lupus.org/answers/entry/joint-muscle-pain-in-lupus
http://www.webmd.com/a-to-z-guides/myositis-symptoms-treatments-prognosis
I'm no doctor, but because lupus can "travel" around in the body, your test results may have also changed because the lupus is someplace else right now. Just my uneducated theory. That's what the lupus does to me. Today it can be affecting my eyes, ears, and brains; but next week the lupus might affect my kidney and bladder. Autoimmune diseases can be elusive to doctors, so I try to be proactive myself by eating healthily and doing online research. Even though I can't totally regain my former robust health, at least I'm maintaining a measure of health. I hope you find what works for you. Best wishes, and don't give up.
It is bad enough when you are told that the Lupus test is possitive,, but then to have them say you are fine later, is kind of a cop out on there part. The ANA is very subjective, it can vary from test to test, but it doesn't mean that you no longer have Lupus. When the doctor told me that I had three positives on the test, I told her, but it is subjective, she agreed, they have gotten better, but doctors still do not have a clue!
Like Nanny said, be proactive, clean up th diet, start eating better, do things that are in your power to change. Finda doctor that returns your calls, and get retested in a couple of months.
Good luck!