The plural form of astasia; multiple instances or types of the condition preventing upright standing.
Standard English pluralization of the medical term 'astasia' by adding '-s.' Used in medical literature when discussing multiple cases or variations.
Medical plurals like this reveal that doctors in the 1800s were starting to see patterns—they couldn't just say 'astasia' once and move on; they needed to count and categorize different versions of the same problem.
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