A 32-year-old woman tells the nurse that she has noticed "very sudden,jerky movements" mainly in her hands and arms."They seem to come and go,primarily when I am trying to do something.I haven't noticed them when I'm sleeping." This description suggests:

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Chorea is characterized by sudden,rapid,jerky,purposeless movements that involve the limbs,trunk,or face.Chorea occurs at irregular intervals,and the movements are all accentuated by voluntary actions.

A 32-Year-Old Woman Tells the Nurse That She Has Noticed