Salivary gland swelling refers to the enlargement or inflammation of the salivary glands, which can occur due to various factors including dehydration, nutritional deficiencies, or specific eating disorders. This condition is particularly significant in the context of eating disorders, where it serves as a physical manifestation of the physiological impact that severe caloric restriction or purging behaviors have on the body. The swelling can be indicative of underlying health issues and is often accompanied by other symptoms related to these disorders.