I don't know how it is differentiated. My dr. will say, "This is the Lupus or this is the RA or today your AS is really bad." I finally told him I didn't care what he called it as long as he made me feel better.

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The PT helps me more than any pill. I am really blessed with a very good PT who is also a Women's Health Specialist so I have learned a lot from her. I have been seeing her 2xweekly for over 2 years. I am getting tired of the appts but she keeps me going.
Blessings to you all.
Possi