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Acute sympathetic hyperfunction in overlapping syndromes of systemic lupus erythematosus and polymyositis.

A 20-year-old woman with arthralgia, serositis, thrombocytopenia, proteinuria, muscle weakness, elevated creatinine kinase, and positive anti-Sm antibody was diagnosed as having polymyositis and systemic lupus erythematosus (SLE). She had persistent high temperature, sinus tachycardia, hyperhidrosis, mydriasis, visual disturbance, hallucination, and loss of consciousness. Levels of plasma adrenaline, noradrenaline, and dopamine and cerebrospinal fluid interleukin (IL)-6 and IL-8 were all high. A diagnosis of sympathetic hyperfunction accompanied by central nervous system (CNS) involvement in SLE was made parenteral. Pulse administration of high dose corticosteroid therapy was effective. This is the first reported case of a connective tissue disease with CNS involvement manifesting as sympathetic hyperfunction with high plasma catecholamine levels.