Abnormalities | Suggestions for differential diagnosis* |
Sitting | |
Leaning sideways |
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Drifting backwards |
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Forward dropping of the head (disproportionate antecollis) |
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Backward dropping of the head (retrocollis) |
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Rising from a chair | |
Inappropriate motor strategies (eg, feet not brought under the body) |
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Slow, requiring multiple attempts, or needing to push off with arms |
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Reckless rising ("rocket sign") |
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Shaking of the legs upon standing (negative orthostatic myoclonus) |
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Legs wide apart while rising |
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AD: Alzheimer disease; ALS: amyotrophic lateral sclerosis; PD: Parkinson disease; PSP: progressive supranuclear palsy; MSA: multiple system atrophy.
* These suggestions are not comprehensive.آیا می خواهید مدیلیب را به صفحه اصلی خود اضافه کنید؟