Dermatomyositis and Carcinoma

SUMMARY. A man aged 56 complained of itching, and subsequently erythema of the face, orbits and other areas exposed to light. Six weeks later, he developed haematuria, and in the following week, a rapidly progressive weakness of the shoulder girdle muscles. He was found to have a rising titre of complement fixing antibody in his serum to an extract of his own bladder tumour. Immunofluorescent tests showed deposits of γ‐globulin around muscle bundles and in the upper cutis.