I have very similar symptoms and have had all sorts of tests - now I am waiting for an appointment with a rhuematologist. Could all this be caused by the lapband. I also have a terrible problem with excess mucus at night. I'm looking for any advice on what can be he problem. I had surgery June 2006, have lost 80 pounds and am very pleased with the lapband experience - except for the "sliming" all night and possibilty that my mysterious fevers (I also get a rash sometimes) are band related.