Epidemic myalgia is a medical condition characterized by widespread muscle pain and tenderness that affects a large number of people in a particular community or geographic area. Other synonyms for this condition include "epidemic muscle pain," "epidemic pleurodynia," and "Devil's grip." The term "Devil's grip" was used during the Coxsackievirus epidemic of the 1950s when many people experienced severe chest pain, often accompanied by muscle pain, fever, and fatigue. Another synonym is "Bornholm disease," which refers to a viral infection that causes similar symptoms. Although these terms are all used to describe the same condition, the severity and duration of symptoms can vary widely depending on the underlying cause.