Case of systemic sclerosis overlapping with psoriasis.

Coexistence of the skin manifestations of systemic sclerosis and psoriasis is rare. The link between systemic sclerosis and psoriasis has been poorly investigated. We report a case of a 70-year-old woman, who was diagnosed with diffuse cutaneous systemic sclerosis and psoriasis vulgaris and was treated with oral azathioprine (50 mg/d) and prednisolone (10 mg/d), topical corticosteroids, and calcipotriols. The erythema and plaques almost disappeared after 1 week, and the symptoms of discoloration in cold, regurgitation, and dysphagia abated after 3 months.