Almost everyone’s mouth is dry sometimes. But if you feel like you have cotton in your mouth constantly, it may be time for treatment. Dry mouth, known medically as xerostomia, occurs when you don’t have enough saliva, or spit, in your mouth. Feeling stressed can trigger dry mouth temporarily. But a persistently dry mouth may signal an underlying disease or condition, so it’s important to see your doctor, says the Food and Drug Administration (FDA), which regulates products that relieve dry mouth. And because dry mouth can lead to tooth decay, you
