What are the causes of dry mouth and a parched throat?

Feb 28, 2025 Source: Cainiu Health
Disease description:

These past two days, no matter if I drink water or other beverages, I have continuously felt a dry mouth and throat, but there is no coughing. I would like to ask what might be causing this condition?

Doctor's answer (1)
Dr. Liu Chao

Dry mouth is a common symptom with a variety of potential causes.

1. Medication side effects: Many medications may cause dry mouth as a side effect, including antidepressants, antihypertensives, sedatives, antihistamines, and certain pain relievers. These medications may reduce saliva gland secretion, leading to dryness in the mouth.

2. Insufficient water intake: The human body requires adequate water daily to maintain normal physiological functions. If water intake is insufficient, it naturally results in dry mouth.

3. Mouth breathing: Breathing through the mouth for prolonged periods, especially during sleep at night, can cause excessive evaporation of moisture from the mouth, resulting in dryness.

4. Salivary gland disorders: Conditions such as salivary gland inflammation or salivary stones can affect saliva secretion, causing dry mouth.

5. Dry climate: In arid climatic conditions, the body loses moisture more easily, particularly within the mouth, leading to dryness.

If symptoms of dry mouth persist, prompt medical attention is recommended.