Definition of Asthenia
Asthenia: Weakness. Lack of energy and strength. Loss of strength. Myasthenia refers to a loss of muscle strength, as in myasthenia gravis.
Asthenia is from the Greek asthenes, from a- (without) + sthenos (strength).Source: MedTerms™ Medical Dictionary
Last Editorial Review: 9/20/2012
Medical Dictionary Definitions A - Z
Search Medical Dictionary
Brain and Nervous System Resources
- How Well Are You Living With AFib?
- How Well Are You Managing Your MS?
- Soothe Your Child's Cold or Flu