What are the symptoms of severe internal fire?

Internal fire is also called internal heat. It is a syndrome name of TCM. It is mainly seen in excessive yang qi transforming into fire, excessive five will, qi depression transforming into fire, evil depression transforming into fire, yin deficiency fire exuberance, etc. It can be divided into deficiency fire and excess fire. Deficiency fire symptoms are mostly five upset fever, red cheeks on the face, insomnia and night sweats, short yellow urine, dry stool, red tongue and less fluid, thin pulse, etc. The clinical manifestations of excess fire are dry mouth, thirst and cold drink, or vomiting yellow phlegm, red eyes and bitter mouth, sore mouth, gingival redness, constipation, short red urine, red tongue coating and slippery pulse.