Medical treatment that uses bathing, especially in hot springs or mineral baths, to cure or relieve illness and pain.
From Latin balneum (bath) combined with Greek therapeia (healing). The term became standardized in the 19th century as thermal spas gained medical credibility.
Balneotherapy is ancient wisdom finally getting a fancy name—the Romans had bath culture down to a science, and modern medicine just formalized what people discovered thousands of years ago about hot water healing!
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