we report two caucasian families with systemic sclerosis and other connective tissue and immunological disorders , including rheumatoid arthritis , discoid lupus erythematosus , psoriasis , psoriatic arthritis , ankylosing spondylitis , ulcerative colitis , asthma , sjogren 's syndrome , raynaud 's phenomenon and thyroid disease .
C0033860
psoriasis
C0003872
psoriatic arthritis