How do u no if u have a chemical imbalance n how do u fix it. Do adrenal gland have anything to do with it. Do they ever stop sending adrenaline?

No such disease. A "chemical imbalance" is not a medical disorder. People use it to describe various disorders or symptoms. Problems with the adrenal glands occur, but they are rare and should be diagnosed by an endocrinologist. "adrenal fatigue" is not a medical diagnosis. If you have particular symptoms, they need to be evaluated.