Dry Mouth (Xerostomia) results from reduced saliva production, causing difficulty swallowing, speaking, and an increased risk of cavities. Causes include dehydration, medications (e.g., antihistamines, antidepressants), autoimmune disorders (e.g., Sjögren’s syndrome), or radiation therapy. Management includes frequent hydration, sugar-free lozenges, saliva substitutes, and treating underlying causes when possible.