My friend has been having swelling, pain, fatigue, night sweats, headaches and cannot do her every day job or even a minor amount of activity without her legs, feet and arms swelling. She has been to the ER two times in the last few weeks due to the pain and they can t find anything with blood work. The one ER doc recommended a rheumatologist and she sees him in a couple weeks. They said they ruled out diabetes but I m not convinced. When I do research I find possible fibromyalgia, rheumatoid arthritis, or lupus. What do you recommend? Thank you.