Addison’s Disease is caused by an autoimmune response, which occurs when the body’s immune system (which protects it from infection) assaults its own organs and tissues. With Addison’s disease, the immune system attacks the outer portion of the adrenal glands (the cortex), where cortisol and aldosterone are made.
Addison Disease affects the adrenal glands, which produce the hormones cortisol and aldosterone as well as androgen hormones. Having too little of cortisol can affect the way the body uses and stores carbohydrates and sugar (glucose). Deficiency of aldosterone will lead to sodium loss and excess potassium in the bloodstream. Symptoms include weakness, fatigue, weight loss, and low blood sugar.