Anxiety is a normal response to stress or a scary situation. But if your anxiety is persistent or severe, you may have an anxiety disorder. This condition can cause a range of symptoms, both mental and physical, including dry mouth.

If you have a lung condition such as asthma or chronic obstructive pulmonary disease (COPD), you may experience shortness of breath when you exert yourself. Pursed lip breathing can help you slow down your breathing and manage your breath more regularly and efficiently.