Antonyms are words that are opposite in meaning to a given word.
Epidemic myalgias, also known as widespread muscle pain, can be described with antonyms such as localized, minor, or specific. Localized muscle pain refers to discomfort in a specific muscle or muscle group, whereas widespread muscle pain affects a larger area of the body.
Additionally, the opposite of epidemic, which refers to a widespread occurrence of an infectious disease, is sporadic or isolated, meaning that the disease is occurring infrequently or in limited instances.
Therefore, if we were to provide antonyms for epidemic myalgias, they would include localized, minor or specific muscle pain, and sporadic or isolated occurrences of muscle pain.