1. Plural of astasia; a medical condition characterized by inability to stand or maintain an upright posture, typically due to neurological dysfunction rather than muscle weakness.
Usage: medical/clinical term; often used in combination with abasia (inability to walk) as 'astasia-abasia'

Examples

• The neurologist documented several cases of astasias in patients with conversion disorder.
• Astasias can result from lesions in the cerebellum or basal ganglia.
• The patient exhibited astasia despite having normal muscle strength in the lower extremities.
• Astasia-abasia is sometimes observed in patients with functional neurological symptoms.