What does "asthenia" refer to in a medical setting?

In a medical context, "asthenia" specifically refers to a state of weakness or lack of strength. It describes a general sense of decreased physical power and can be associated with various conditions, from chronic fatigue syndrome to systemic illnesses that affect muscle function. Unlike other terms that might describe pain or exhaustion, asthenia focuses solely on the impaired strength or ability to sustain physical activity. This terminology is critical in diagnosing and treating patients who present with symptoms of weakness, as it helps differentiate weakness from fatigue, pain, or other related conditions. Understanding this term is crucial for physical therapy technicians when developing treatment plans or assessing a patient's physical capabilities.