What should I do about a dry mouth, a parched tongue, and a thick white tongue coating?

When encountering symptoms of dry mouth and thick white tongue coating, the following measures should be taken: 1. **Hydration**: Dry mouth may be caused by dehydration. It is recommended to ensure an intake of 2500–3000 ml of water daily to maintain the body's water balance. 2. **Dietary adjustment**: The diet should be light and bland. Avoid overly salty, greasy, or spicy foods. Consume more foods rich in vitamins, such as cucumbers, tomatoes, etc. 3. **Seek medical advice**: Thick white tongue coating may be related to various causes, such as spleen and stomach deficiency or phlegm-dampness. Visit a reputable hospital for diagnosis, identify the underlying cause, and choose an appropriate treatment plan under the guidance of a qualified physician. 4. **Lifestyle habits**: Maintain good oral hygiene by brushing teeth in the morning and evening, and rinsing the mouth after meals. At the same time, maintain a healthy lifestyle and avoid staying up late or overexertion. Patients with concerns are advised to seek timely medical consultation.