This disease belongs to the category of  "goitre", " palpitation", etc in TCM. It is mainly caused by internal injury of the seven human emotions, or improper diet, suppressed liver and  accumulating  phlegm, the liver fire and irritated stomach, which give rise to the impair the heart and liver, and consequently lead to the fire excess from yin deficiency. Treating principles are to disperse the depressed liver-energy, reduce phlegm, invigorate yin and lower fire.

Hyperthyroidism results from the reason that the morbid stale of thyroid gland secretes excessive thyroid gland hormone. This disease is found more in women; and the morbidity is high with the young and middle-aged. In clinically, it manifested as hyper-metabolism syndrome, increasing nerve excitability, goiter and exophthalmos to some extend, for instance, there are symptoms like palpitation, irritable and fluctuating mood, good appetite and thin physique, feeling hot and sweating, dry mouth and hot and accompanied with swelling thyroid gland and exophthalmos, etc.