ACTH is an adrenocorticotropic hormone that maintains the normal function and morphology of the adrenal glands, and the secretion of this hormone can be affected by glucocorticoids. When there is an abnormal increase in the secretion of adrenocorticotropic hormone in pathological states, resulting in increased secretion of adrenocorticotropic hormone, the patient will develop a full-moon face, centripetal obesity, a series of symptoms such as osteoporosis, easy fracture, easy infection, and decreased immunity, called Cushing’s syndrome. If the level of adrenocorticotropic hormone decreases, it suggests a problem with the pituitary gland.