Excessive secretion of adrenaline may cause hypertension, cardiac arrhythmias, autonomic dysfunction and other disorders. Adrenaline is secreted by the adrenal medulla and is a catecholamine hormone. If it is secreted in excess, palpitations and chest tightness may occur, leading to tachyarrhythmias and, in some patients, hypertension. In addition, a large amount of adrenaline secretion may also cause autonomic dysfunction, with symptoms such as increased heart rate, insomnia, sweating, and cold and clammy skin. There are many reasons for excessive adrenaline secretion, such as excessive mental stress, nervous tension and other physiological factors, as well as pheochromocytoma, paraganglioma and other pathological factors. If you have excessive adrenaline secretion, you need to consult a doctor in time, complete the relevant examination, clarify the cause of the disease, and carry out symptomatic treatment.