An autoimmune disease called Sjorgren’s disease is frequently associated with having a dry mouth. If you frequently have a dry mouth and dry eyes, see your doctor to get you checked for Sjorgren’s disease. You might also have joint pain, swelling, and stiffness; swollen salivary glands; skin rashes or dry skin; vaginal dryness; dry cough; and fatigue. [9] X Trustworthy Source Cleveland Clinic Educational website from one of the world’s leading hospitals Go to source