I have been diagnosed with Rhuematoid arthritis, but bloodwork didn't show it. I have found that most of the joints showing malformation seem to acutally be the result of bone spurs. Is there some condition that would cause excessive bone spurs? Is there any kind of familial disease that could cause it? My sister has sarcoidosis, which is why it is believed I have rhuematoid arthritis, even without it .showing in blood tests.