Adrenal insufficiency is a condition in which the adrenal glands do not produce enough of the hormones cortisol and aldosterone. Symptoms of adrenal insufficiency can include fatigue, low blood pressure, weight loss, and nausea. Diagnosis of the condition is made through a physical examination, blood tests, and imaging tests. Treatment for adrenal insufficiency typically involves taking a synthetic hormone replacement to replace the deficient hormones. In some cases, lifestyle changes such as reducing stress, getting enough sleep, and eating a healthy diet may also help.