Abstract
A syndrome that resembles Systemic Lupus Erythematosus both clinically and on laboratory studies may be induced by procainamide. It is associated with multisystemic involvement, positive Antinuclear Antibody titers (ANA), and positive LE cell preparations. In patients on procainamide therapy the syndrome must be differentiated from osteoarthritis, myocardial infarction, and pulmonary embolism. When procainamide is discontinued, this Lupus-like syndrome is usually reversible. Other drugs, including hydralazine and isoniazid have also been implicated in provoking this Lupus-like syndrome.
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