Final answer:
The nurse would best document the described movements as athetoid. Athetoid movements are slow, worm-like, writhing or twisting movements that are characteristic of cerebral palsy.
Step-by-step explanation:
The nurse would best document the described movements as athetoid. Athetoid movements are slow, worm-like, writhing or twisting movements that are characteristic of cerebral palsy. This type of movement is associated with damage to the basal ganglia, which is involved in the control of movement.