The majority of people with lupus have lupus alone. Between five and thirty percent of people with lupus report having overlap symptoms characteristic of one or more connective tissue diseases. There are several well-recognized overlaps that may affect people with lupus including: lupus and rheumatoid arthritis (RA), lupus and myositis, lupus and systemic sclerosis (SSc or scleroderma), lupus and Sjogren's syndrome (SS).