About Addison's Disease (Chronic Adrenal Insufficiency)
The disease causes of Addison's disease include:
- Autoimmune disease: The most common cause, where the immune system mistakenly attacks and damages the adrenal glands
- Infections: Certain infections can damage the adrenal glands and disrupt hormone production
- Genetic factors: Some genetic conditions, such as congenital adrenal hyperplasia or adrenal leukodystrophy, increase the risk of developing Addison's disease.
Non-modifiable factors for Addison's disease are factors that cannot be changed or controlled. These include:
- Genetic features: Certain genetic conditions like congenital adrenal hyperplasia and antiphospholipid syndrome increase the risk of developing the disease.
Modifiable factors are factors that can be influenced or changed. For Addison's disease, they are not well-known or clearly understood. However, some potential triggers for an Addisonian crisis (severe symptoms) include:
- Traumatic physical events
- Severe dehydration
- Infections, including gastrointestinal infections and flu
- Surgery involving the adrenal glands
- Emotional trauma
It's important to note that these triggers can worsen symptoms in individuals already diagnosed with Addison's disease. It's always best to consult with a healthcare professional for personalized advice and management.
The most common early symptoms of Addison's disease include:
- Chronic fatigue
- Muscle weakness
- Loss of appetite
- Weight loss
Other common symptoms that may occur with later stages, progression, or higher severity of the condition include:
- Abdominal pain
- Nausea and vomiting
- Diarrhea
- Low blood pressure leading to dizziness or fainting when standing up
- Irritability and depression
- Joint pain
- Craving salty foods
- Hypoglycemia (low blood sugar)
- Irregular or no menstrual periods
- Loss of interest in sex
In some cases, darkening of the skin may also occur, particularly on scars, skin folds, pressure points, lips, and mucous membranes. It's important to note that symptoms of Addison's disease can develop slowly over time and may be overlooked or mistaken for other illnesses. If you experience persistent fatigue, weakness, or weight loss, it's advisable to consult a healthcare professional for an evaluation. Early treatment can help prevent an adrenal crisis.
To diagnose Addison's disease, doctors commonly perform the following examinations, tests, and procedures:
- Reviewing the individual's medical history and asking about symptoms and their impact on everyday life
- Conducting a physical examination to assess signs of adrenal insufficiency
- Blood tests to measure sodium, glucose, and cortisol levels, among other measures
- Urine tests to evaluate adrenal function
- CT (computed tomography) scan of the abdomen to assess the size and condition of the adrenal glands
To determine the severity or progression of Addison's disease, additional examinations, tests, and procedures may be performed:
- Antibody blood tests to identify autoimmune Addison's disease
- CT scan of the abdomen to detect any changes in the adrenal glands
- MRI (magnetic resonance imaging) and CT imaging to examine the adrenal gland, pituitary gland, and brain region controlling hormone production.
- Blood tests such as adrenocorticotropic hormone (ACTH) stimulation test, insulin tolerance test (ITT) and corticotropin-releasing hormone (CRH) stimulation test to confirm the diagnosis and assess adrenal function.
It is important to consult with an endocrinologist who can diagnose Addison's disease and oversee treatment. They can provide personalized recommendations based on individual circumstances.
The goals of treatment for Addison's disease are:
- Substituting deficient steroid hormones: The main goal is to replace the hormones that the adrenal glands are not producing adequately. This is achieved through hormone replacement therapy, which typically involves corticosteroids to reduce inflammation and hormone replacements to restore cortisol and aldosterone levels.
- Preventing adrenal crises: Patients are educated about stress dosing and taught to increase their glucocorticoid dosages during times of illness or stress. It is important to mimic the body’s natural cortisol rhythm as closely as possible.
- Restoring negative feedback mechanism: Treatment focuses on balancing the hypothalamic-pituitary-adrenal (HPA) axis, which is a system in the body that controls stress hormones like cortisol. This is done by mimicking the body’s natural daily rhythm of cortisol release, which helps reduce the overproduction of adrenal androgens, a type of hormone produced by the adrenal glands.
- Managing complications: Complications such as infections, high blood sugar levels, and steroid-induced diabetes can arise from long-term steroid use. It is important to address these complications promptly to minimize their impact on overall health.
The recommended treatments for Addison's disease include:
- Hormone replacement therapy: Corticosteroids like hydrocortisone, prednisolone, or dexamethasone are used to replace cortisol. Fludrocortisone is prescribed to supplement aldosterone levels.
- Stress dosing: During times of illness or stress, patients may require higher doses of steroids to prevent adrenal crises.
- Health behavior changes: Patients should be educated about managing their condition, including the importance of taking their medication correctly and consistently, stress management, and recognizing symptoms of adrenal crisis.
Medication dosing may be affected by many factors. Check with your health care professional about dosing for your individual situation. Other side effects can occur. Check with your health care professional or read the information provided with your medication for additional side effect information.