Dry mouth, dry tongue and hot feet and difficulty in sleeping are usually symptoms of Kidney-Yin deficiency. In addition to dry mouth, dry tongue, hot feet, and difficulty in sleeping, symptoms of Kidney-Yin deficiency include dizziness and tinnitus, lumbar and knee weakness (a feeling of soreness and weakness in the waist and knees), hot flashes (bursts of heat), and night sweats (abnormal sweating after going to sleep, which stops after waking up). Patients with kidney yin deficiency can take Chinese patent medicines such as Zhi Bai Di Huang Wan and Liu Wei Di Huang Wan or use some tonics under the guidance of a Chinese medicine practitioner to treat the patient according to the patient’s own physical condition and the presence of other chronic diseases. If you have any of the above physical discomforts, it is recommended to ask your physician to identify the symptoms and treat them.