Adynamia

A decrease in "vital power" that leads to a reduction in behavior, thought, and feelings normally present. It is closely related to avolition (decreased motivation for purposeful activities) and apathy .

is a medical condition characterized by a pathological lack of strength, vigor, or "vital power". Unlike general tiredness, it is specifically defined by a difficulty in initiating goal-directed behaviors, thoughts, or emotions. While it is most frequently discussed as a neurological symptom following brain injury, it also appears in specific hereditary muscular disorders. 1. Clinical Definitions and Variants adynamia

Adynamia is often categorized based on whether it affects motor function, speech, or general motivation: A decrease in "vital power" that leads to