Sjögren's syndrome is an autoimmune disorder that primarily affects the body's moisture-producing glands. It leads to dry eyes and dry mouth, as the immune system mistakenly attacks these glands. This condition can occur on its own or alongside other autoimmune diseases, such as rheumatoid arthritis or lupus. In addition to dryness, Sjögren's syndrome can cause fatigue, joint pain, and swelling. Diagnosis typically involves blood tests and eye examinations. While there is no cure, treatments focus on relieving symptoms, such as using artificial tears for dry eyes and staying hydrated to manage dry mouth.