[Occupational and environmental factors and systemic connective tissue diseases].

The article contains the results of a study in the rates of occupational and every-day contacts with different chemical substances and consequent allergic reactions, particularly in patients with connective tissue systemic diseases. Illnesses followed expositions to different unfavourable industrial factors in 43% of lupus erythematosus cases, in 40% of the sclerodermia cases, and in 41.6% of dermatomyosites.