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People with this condition are unable to move their eyes in all directions, especially looking upward.
An exam of the nervous system (neurological examination) may show:
The health care provider may do tests to rule out other diseases. Magnetic resonance imaging (MRI) might show shrinking of the brainstem.
Lang A. Parkinsonism. In: Goldman L, Ausiello D, eds. Cecil Medicine. 23rd ed. Philadelphia, Pa: Saunders Elsevier;2007:chap 433.
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