In clinical practice, it is common to see that qi deficiency often leads to excessive sweating, but does excessive sweating always indicate qi deficiency? Not necessarily. There are three reasons for excessive sweating: The first reason is qi deficiency, the second reason is damp-heat, and the third reason is yin deficiency. As you can see, excessive sweating is not always due to qi deficiency; it can also be due to yin deficiency or damp-heat. There is also a condition of excessive sweating due to congenitally active sweat glands, which is not caused by qi deficiency but is instead a hereditary factor. Therefore, excessive sweating is not necessarily always due to qi deficiency.