What causes dry mouth and throat every morning?
Disease description:
I always wake up with a dry mouth and tongue every morning, and drinking some water doesn’t seem to help much. What causes this persistent morning dry mouth?
Doctor's answer (1)
Dr. He Haochen
Waking up with a dry mouth and throat each morning is primarily due to the body’s prolonged lack of fluid intake during sleep—typically several hours—leading to hemoconcentration (reduced blood volume with increased concentration of solutes) and resulting in mild dehydration. Consequently, individuals often experience dryness of the mouth and throat upon waking; therefore, it is important to replenish fluids promptly after rising. However, persistent dry mouth and throat may also stem from pathological conditions such as hyperthyroidism or diabetes mellitus. In such cases, it is advisable to consult a healthcare provider and undergo appropriate diagnostic testing at a hospital.
