Eosinophilia-myalgia syndrome/Definition

A complex systemic syndrome with inflammatory and autoimmune components that affect the skin, fascia, muscle, nerve, blood vessels, lung, and heart. Diagnostic features generally include eosinophilia, myalgia severe enough to limit usual activities of daily living, and the absence of coexisting infectious, autoimmune or other conditions that may induce eosinophilia.

This definition is at least in part based on: Anonymous (2023), Eosinophilia-myalgia syndrome (English). Medical Subject Headings. U.S. National Library of Medicine.