There is an extensive article on Kitchen Doctor dealing with the profound subject of chronic fatigue and adrenal exhaustion.
While symptoms vary from person to person, the early stages of stress tend to begin with a heightened sense of smell, more susceptibility to bruising (black and blue marks), fatigue, more frequent urination, dark circles under the eyes, increased number of allergies, and narrower margins for coping.
Adaptogenic herbs such as maca and Siberian ginseng tend to support improved adjustments to stress. Some formulas used for adrenal exhaustion are nervines, herbs that tonify the nervous system and help people to relax. Other formulas support kidney and adrenal function and promote greater stamina. Some herbs, like guduchi and jatoba, help with allergic responses. Before choosing a product, it might be wise to consider whether you are essentially a dynamic person who is pushing too hard or a more delicate person with less reserve energy and/or elasticity. It might also be sensible to consider whether there is a way to manage stress, both the emotional stress of relationships, jobs, and finances as well as the physical stress of accidents, allergies, infections, and chronic illness.

