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A 29-year-old male patient with IgA nephropathy developed scleritis and myasthenia gravis during the follow-up period. No lymphocytic infiltration or atrophy in muscle fibers was observed in muscle biopsy specimens. However, an immunofluorescent study on the same specimens showed deposits of immunoglobulin A in muscular vessels. The development of scleritis and myasthenia gravis in a patient with IgA nephropathy suggests a common immunologic basis for these disorders.
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