First let me ask if you have been diagnosed with rheumatoid arthritis and if you have are you taking medication or pain pills for it.  If you do have RA that would explain the symptoms of pain and stiffness in your neck, arms, fingers, knees, and your swollen feet.  And if you are on medication for RA, then you medications can explain your dry nostrils and your strange bowel movements.  Now if you have not been diagnosed with RA, then you should talk to your physician about being tested as your symptoms can be referred to as typical RA symptoms.  If you are having these problems you should see your doctor.  You need to sit down and talk to him openly and honestly.  You need to tell him how long you have been having thses symptoms, and how severe they are and how much they affect your daily life.  Your doctor should be able to run tests from there.  I hope you find relief soon!  Good luck and best wishes!