1. Mixed Connective Tissue Disease (MCTD) -- AOL Medical Encyclopedia
These disorders include systemic lupus erythematosus, polymyositis, and scleroderma. Individuals with MCTD have symptoms of each of these disorders includin...
http://body.aol.com/conditions/mixed-connective-tissue-disease-mctd

2. Scleroderma -- Mayo Clinic
Scleroderma is one of a group of arthritic conditions called connective tissue disorders. In these disorders, a person's antibodies are directed against his or her own tissues. Scleroderma can run in families, but in most cases it occurs without...
http://www.mayoclinic.com/invoke.cfm?objectid=3830E935-0B28-4EE9-85E99C26147082...

3. Raynaud Phenomenon -- EMedicineHealth Consumer Information
Raynaud phenomenon is a vessel abnormality caused by overactivity of smooth muscle in the wall of arteries, causing contractions, or vasospasms, of the small vessels that supply blood to the arms, legs, hands, and feet.
http://www.emedicinehealth.com/articles/5538-1.asp