Xerostomia is defined as what condition?

Xerostomia is specifically defined as dryness of the mouth, which occurs when there is a reduced flow of saliva. This condition can result from a variety of causes, including medications, head and neck radiation therapy, and certain medical conditions. Saliva plays a crucial role in maintaining oral health by aiding in digestion, protecting against tooth decay, and preventing infections. When saliva production is diminished, individuals may experience discomfort, difficulty swallowing, issues with taste, and an increased risk of dental problems. Understanding this condition is especially relevant in the context of oncology, where many treatments can lead to xerostomia as a side effect.