The word "astasia" means which of the following?

The story behind the answer

Astasia means the inability to stand up, from Greek a- (without) + stasis (standing). It’s a neurological sign: a person cannot maintain upright posture even though their leg strength may be normal when sitting or lying. Astasia often appears with abasia (inability to walk), forming “astasia-abasia,” seen in certain frontal lobe, basal ganglia, or cerebellar disorders, and sometimes in functional (psychogenic) gait disturbances.

Memory tip: think “station” and “stasis” (both relate to standing still). Add the “a-” prefix meaning “without,” and you get “without standing.” This distinguishes it from issues of decision-making (abulia), attention, or behavior, which are unrelated.