Argyria or argyrosis or Blue Man Syndrome - is a condition caused by excessive exposure to chemical compounds of the element silver, or silver dust. The most dramatic symptom of argyria is that the skin turns blue or blue-gray, and is usually most prominent in sun-exposed areas of the skin. It may take the form of generalized argyria or local argyria. Generalized argyria affects large areas over much of the visible surface of the body. Local argyria shows in limited regions of the body, such as patches of skin, parts of the mucous membrane, or the conjunctiva. Read more ...

Argyria: The rare disease that turns people blue. Argyria is caused by the ingestion of - or exposure to - silver or silver-containing compounds   Live Science - January 16, 2025

People who work with silver or use colloidal silver as a dietary supplement are at the greatest risk of developing argyria. This includes people who consume colloidal silver as a form of alternative medicine in an attempt to treat conditions such as high blood pressure and diabetes. U.S. health officials have warned that the compound isn't effective for treating any condition and that it can interfere with certain drugs, such as antibiotics.