spasticity
C1CEFR level
65/100Rarity: rare
TechnicalRegister
A velocity-dependent increase in muscle tone due to an upper motor neurone lesion.
Progressive spasticity in both legs made his gait stiff and scissoring, and he required regular botulinum toxin injections.
Rarity runs from 0 (a word everyone knows) to 100 (almost never seen outside specialist or literary writing). Level is the word's real difficulty on the CEFR scale, from A1 to C2.
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