1) Hypodynamia 1) Lack of strength or vigor 2) Medical sign 3) Weakness 
Adynamia means lack of strength or vigor due to a pathological condition. It is often associated with a range of neurological diseases such as multiple sclerosis and medial-frontal lobe lesions. 1. http://www.wrongdiagnosis.com/medical/adynamia.htm ...
helplessness; lack of strength
• (n.) Considerable debility of the vital powers, as in typhoid fever.
(a-di-na´me-ә) asthenia. adj., adynam´ic., adj.
lack of movement or strength as a result of disease - helplessness
Ad`y·na'mi·a noun [ New Latin adynamia , from Greek ... want of strength; ... priv + ... power, strength.] (Medicine) Considerable debility of the vital powers, as in typhoid fever. Dunglison. 
Type: Term Pronunciation: ā-dī-nam′ē-ă, ad-i-nā′mē-ă Definitions: 1. Lack of motor activity or strength. Synonyms: asthenia
[n] - lack of strength or vigor esp from illness
adynamia, adynamic 1. Lack or loss of normal or vital powers. 2. Characterized by or causing weakness.
noun lack of strength or vigor (especially from illness)