Abstract
A young man presented with generalized chorea as the first manifestation of probable primary antiphospholipid syndrome. He was well till 3 months before admission when he started to have involuntary, choreiform movements involving all extremities, the head and the bulbar muscles. Apart from these movements his physical examination was otherwise unremarkable. Laboratory investigations revealed mild thrombocytopenia, high partial thromboplastin time (PTT) only partially corrected by the addition of normal plasma, false positive syphilis serology, weakly positive antinuclear antibody and a high level of IgG anticardiolipin antibodies. Brain magnetic resonance imaging (MRI) showed multiple scattered small areas of high signal intensity on T2 weighted image in the area of centrum semiovale bilaterally. The patient was started on aspirin and prednisone with rapid symptomatic improvement. Despite the difficulty in proving the association between chorea and the high antiphospholipid antibodies, chorea appears in this case to be the initial symptom of primary antiphospholipid syndrome and we suggest screening for antiphospholipid antibodies in unexplained cases of chorea.
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