asthenia
Meaning of asthenia: Asthenia is a general lack of physical energy or strength that can accompany many acute and chronic medical conditions.
Definition of asthenia
Asthenia is a state of generalized weakness or lack of energy that is not limited to a single muscle group. It differs from true muscle weakness caused by a specific neurologic or muscular disorder, though the two can be difficult to distinguish based on symptoms alone.
Asthenia can accompany a wide range of conditions, including infections, chronic illness, cancer and its treatment, endocrine disorders, and prolonged periods of illness or inactivity. It is often described alongside fatigue, though the two terms are sometimes used to describe slightly different experiences.
Because asthenia is a nonspecific symptom with many possible causes, evaluating it typically involves a broader review of the person's overall health, recent illnesses, and any accompanying findings.
Used in a sentence
The patient described progressive asthenia over several weeks in addition to weight loss.
Good to know
Asthenia describes a general sense of weakness or low energy and is distinct from true muscle weakness measured on examination, which reflects a specific reduction in muscle strength.
Word origin
Where “asthenia” comes from
Formed from a- (Greek, meaning "without") and sthenos, meaning "strength."