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Parkinsonism Relat Disord. 2001 Oct;7(4):289-295.

Parkinsonism associated with autosomal dominant bilateral striopallidodentate calcinosis.

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Department of Neurology, Scott and White Clinic, Memorial Hospital and Texas A and M University Health Science Center System College of Medicine, 2401, South 31st street, 76508, Temple, TX, USA


Bilateral striopallidodentate calcinosis (BSPDC, also known as Fahr's disease, a misnomer), is a rare disorder where bilateral, almost symmetric, calcium and other mineral deposits occur in subcortical nuclei and white matter. Neurological manifestations vary but movement disorders are the most common. Of the movement disorders, parkinsonism predominates. We describe 6 patients with BSPDC associated with parkinsonism. Of the 6 patients, one patient from an autosomal dominantly inherited family who responded to levodopa, showed Lewy bodies in substantia nigra neurons and changes consistent with BSPDC. Another patient, from the same family with clinical evidence of parkinsonism and radiological and neuropathological evidence of BSPDC, did not show Lewy bodies. Ten patients with BSPDC and parkinsonism (without evidence of parathyroid dysfunction) were found in the literature. When parkinsonism is associated with dementia and cerebellar signs, obtaining a CT scan may be helpful as BSPDC often presents with the above three conditions.

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