neurasthenia

/ˌnjʊəɹəsˈθiːniə/

neurasthenia

English Noun

Definition

An ill-defined medical condition characterized by lassitude, fatigue, headache, and irritability, associated chiefly with emotional disturbance.

Etymology

From neur- + asthenia, after Italian nevrastenia. By surface analysis, neur- (“nerve”) + a- (“not”) + sthen- (“strength”) + -ia (“disease”).