Yes, it is possible to have mild Addison's disease.
Addison's disease, also known as primary adrenal insufficiency, is a rare endocrine disorder in which the adrenal glands do not produce enough of the hormone cortisol and, in some cases, the hormone aldosterone. It usually occurs when the adrenal glands, located just above the kidneys, are damaged and can no longer produce the hormones needed to regulate the body's metabolism and electrolyte balance.
Mild Addison's disease may be asymptomatic or manifest only with nonspecific symptoms such as fatigue, weight loss, and/or muscle weakness. It is often misdiagnosed as depression, chronic fatigue syndrome, or other conditions.
If left untreated, mild Addison's disease can lead to more serious complications such as adrenal crisis, an extreme form of adrenal insufficiency caused by a sudden and severe drop in cortisol levels. Symptoms of adrenal crisis include severe vomiting, low blood pressure, and loss of consciousness.
In order to diagnose mild Addison's disease, a doctor will typically order a series of blood tests to measure hormone levels. Treatment may include taking hormone replacement therapy, such as hydrocortisone tablets, mineralocorticoid medications, and/or lifestyle changes such as stress management. In most cases, mild Addison's disease can be managed with proper treatment and the prognosis is generally good.