Lupus. Rheumatoid arthritis, antiphospholipid syndrome, systemic lupus erythematosus, and sjögrens. Most people with raynaud's syndrome don't have an underlying disease, though.
Autoimmune diseases. Raynaud's can be seen without associated autoimmune diseases. It can also be seen with, scleroderma, lupus, sjogrens, vasculitis, carpal tunnel, trauma, smoking, certain medications, and exposure to vinyl chloride.