A rare association of systemic sclerosis with psoriasis vulgaris.

Three patients with systemic sclerosis (SSc) and psoriasis vulgaris were evaluated. The onset of psoriasis preceded by 3-7 years the onset of SSc in all cases. All the patients presented diffuse scleroderma, accompanied by lung and esophageal involvement in two cases. Sjögren's syndrome occurred in one case. Myalgia developed with the onset of SSc in two patients. The PASI score was not high (mean; 5.2), implying that the degree of psoriasis was not severe in these cases. However, this might have been due to the systemic prednisolone administered for myalgia.