"Excess cortisol" refers to having too much of the hormone called cortisol in the body. Cortisol is usually produced in response to stress, but having too much of it can cause negative effects on a person's health and well-being. Full definition
The remaining 15 to 20 percent of cases are the result of a tumor on one or both of the adrenal glands, causing excess cortisol production. (dogcare.dailypuppy.com)
Stress can cause excess cortisol and even cortisol resistance skin to insulin resistance. (myersdetox.com)