There are several synonyms for "mud bath," a spa treatment where a person immerses themselves in warm mud to promote relaxation and soothe the skin. One alternative term is "clay bath," where natural clay is used instead of mud. Another synonym is "fango therapy," which uses a specific type of mud from Italy that is rich in minerals and is believed to have healing properties. Additionally, the term "mud wrap" can be used when the mud is applied to the body and wrapped in a thermal blanket to enhance its effects. Some spas also refer to the treatment as a "mud immersion" or "mud therapy," emphasizing the therapeutic benefits of the experience.