A medical condition characterized by extreme weakness or lack of strength; loss of vital force or energy.
From Greek 'a-' meaning 'without' plus 'dynamis' meaning 'power' or 'strength.' This medical term was formed in the 18th century to describe debilitating conditions that reduce physical vigor.
Adynamia perfectly describes that utterly exhausted feeling after a serious illness when your body has literally lost its 'power'—and it's why recovery from diseases requires not just healing but rebuilding strength over time.
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