[…] limitation of vertical gaze OR a hx of prominent postural instability and falls in the first year of onset 28 CORTICAL BASAL DEGENERATION Clinical Features Prevalence of
[slideplayer.com]
instability, as well as by a clinically significant response to treatment with levodopa.
[ghr.nlm.nih.gov]
instability, rigidity, involuntary movements, dysarthria, supranuclear gaze, hypomimia, gait impairment, and myoclonic jerks).
[orpha.net]