Asthenia, anemia, nausea, dyspnea, and rash were the most common side effects associated with temsirolimus.
From the sciencedaily.com
Asthenia may be limited to certain organs or systems of organs, as in asthenopia, characterized by ready fatiguability.
From the en.wikipedia.org
Transient symptoms of myalgia, malaise, asthenia and rarely, fever have been reported with FOSAMAX, typically in association with initiation of treatment.
From the online.wsj.com
More examples
An abnormal loss of strength
Weakness is a symptom used to describe a number of different conditions, including: lack of muscle strength, malaise, dizziness or fatigue. The causes are many and can be divided into conditions that have true or perceived muscle weakness. ...
General wasting away, lack of strength.
Weakness which may be a euphemism for pulmonary tuberculosis.