Definition of "asthenia" [as•the•ni•a]

• Loss or lack of bodily strength; weakness; debility. (noun)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "GUILLAIN-BARRE syndrome, asthenia, headache, sleepiness and pericardial effusion were reported as other important medical event."
• "One day post vaccination the patient developed asthenia, headache and sleepiness which improved the following day."
• "He died at the age of thirty-two from “asthenia from pneumonia,” probably as a secondary result of sickle cell disease."