What is a symptom of thirst and dry mouth?

Dry mouth, usually caused by internal heat. The specific zang-fu heat needs to be combined with other clinical manifestations. If dry mouth, accompanied by cough, yellow sputum, it is considered to be caused by lung heat. If dry mouth, accompanied by easy hunger, dry stools, like to drink cold water, it is considered to be caused by stomach heat. If dry mouth, accompanied by palpitations, palpitation, upset, insomnia and other manifestations, it is considered to be caused by heart fire. If dry mouth, accompanied by bitter mouth, pain in both ribs, etc., consider liver fire. If dry mouth, other no obvious discomfort, normal is also according to stomach heat treatment.