Myxomatous degeneration is a term used to describe the degenerative changes that happen to a certain group of tissues in the body. These changes are not specific to one particular organ and can occur in various parts of the body. There are several different synonyms for myxomatous degeneration, including mucoid degeneration, gelatinous degeneration, and myxoid degeneration. These terms all describe the same process, where the affected tissues become softened and mushy due to excess accumulation of a substance called mucin. This can cause a range of symptoms, depending on which tissues are affected, including pain, weakness, and even organ failure in severe cases.