Addison's Disease

Overview

Addison's disease is a rare hormonal disorder that occurs when the adrenal glands fail to produce sufficient hormones. The adrenal glands are small organs located on top of each kidney that produce hormones regulating many vital functions, from the body's ability to cope with stress to salt and water balance.

The most important of these hormones are cortisol and aldosterone. Cortisol regulates the stress response, controls the immune system, and balances blood sugar. Aldosterone regulates blood pressure by maintaining salt and water balance. In Addison's disease, production of both these hormones falls short and the body enters a serious imbalance.

Addison's disease can occur at any age and in both sexes. However, it is more commonly seen in women between ages 30-50. Approximately 100-140 cases per 100,000 people are found worldwide, making it quite rare.

Although Addison's disease requires lifelong medication, living a completely normal life is possible with the right treatment. The key is replacing the hormone deficiency with medications and learning to adjust doses in stressful situations.

Symptoms

The symptoms of Addison's disease typically develop slowly and insidiously. Because they emerge over months or even years, they may not be noticed at first or may be attributed to other conditions. Symptoms arise from the effects that cortisol and aldosterone deficiency create in the body.

The most common symptoms are:

• Extreme fatigue and weakness. This is the most prominent symptom of Addison's disease. It is a chronic fatigue that does not go away with rest. The energy needed to carry out daily activities cannot be found. Even getting out of bed in the morning can become difficult.
• Weight loss and decreased appetite. Cortisol deficiency negatively affects metabolism. Appetite decreases and weight loss occurs without awareness. Nausea and abdominal pain may also accompany these symptoms.
• Skin darkening (hyperpigmentation). This is a symptom unique to Addison's disease. Areas that get sun exposure, joints, palms, kneecaps, the inner surface of the elbow, and scars take on a much darker color than normal. Dark spots may also appear on the inner lips, gums, and vaginal area. This is caused by excessive secretion of the ACTH hormone.
• Low blood pressure. Due to aldosterone deficiency, the body cannot retain salt and water. This leads to a drop in blood pressure. Dizziness and lightheadedness when standing up (orthostatic hypotension) are especially common.
• Salt craving. Due to aldosterone deficiency, the body loses its salt. This creates a strong craving for salty foods.
• Low blood sugar (hypoglycemia). Cortisol plays a role in balancing blood sugar. When deficient, blood sugar can drop and symptoms like trembling, sweating, and difficulty concentrating may appear. This is more common in children.
• Muscle and joint pain. Muscles weaken and pain begins. Weakness and heaviness in the legs are common.
• Irritability, depression, and mood changes. Cortisol affects brain functions. When deficient, depressed mood, irritability, difficulty concentrating, and memory problems may be seen.
• Nausea, vomiting, diarrhea. Digestive system symptoms are common. Stomach pain and loss of appetite may also accompany these.
• Reduced body hair and decreased libido in women. The adrenal glands also produce some sex hormones. Their deficiency can cause reduction in underarm and pubic hair and decreased libido in women.

When evaluated individually, these symptoms can bring many other diseases to mind. This is why diagnosis can take time. It is important to evaluate the symptoms together and consult a doctor.

When to See a Doctor

See a doctor in the following situations:

• If you are experiencing unexplained chronic fatigue and weakness
• If weight loss, loss of appetite, and nausea are seen together
• If you have noticed unusual darkening in your skin
• If your salt craving has increased and you have low blood pressure
• If you feel dizzy and lightheaded when standing up
• If depression, extreme fatigue, and weight loss are present together

Addison's crisis is an emergency. Call 112 or go to the emergency room for the following symptoms:

• Sudden and very severe abdominal, back, or leg pain
• Severe vomiting and diarrhea
• Seriously low blood pressure and fainting
• Loss of consciousness or confusion
• High fever

Addison's crisis is a life-threatening condition if left untreated. For this reason, patients with a diagnosis should always have an emergency plan ready.

Causes

Addison's disease is examined in two main categories: primary and secondary insufficiency.

• Primary adrenal insufficiency (Addison's disease): Occurs when the adrenal glands themselves are damaged or destroyed. In developed countries, the most common cause is autoimmune disease. That is, the immune system makes a mistake, perceives its own adrenal glands as foreign, and attacks them. Over time, gland tissue is damaged and hormone production decreases.

Other primary causes are:

• Tuberculosis. Historically the most common cause and still significant in developing countries. The tuberculosis bacterium settles in the adrenal glands and destroys the tissue.
• Other infections. HIV/AIDS, fungal infections, and some viral diseases can affect the adrenal glands.
• Cancer metastasis. The spread of cancers like lung, breast, or melanoma to the adrenal glands can disrupt gland function.
• Bleeding or infarction. Bleeding in the adrenal glands can occur during blood clotting disorders or serious infections.
• Secondary adrenal insufficiency: The adrenal glands are healthy but are not sufficiently stimulated by the brain. If the pituitary gland or hypothalamus cannot produce enough ACTH hormone, the adrenal glands don't work. The most common cause is suddenly stopping long-term corticosteroid (cortisone) medication use.

Risk Factors

Some factors increase the risk of developing Addison's disease:

• History of autoimmune disease. Risk increases in people with other autoimmune diseases such as type 1 diabetes, thyroid diseases (Hashimoto's, Graves'), rheumatoid arthritis, or lupus.
• Family history. If there is Addison's disease or autoimmune disease in the family, there may be a genetic predisposition.
• Long-term corticosteroid use. Secondary insufficiency can develop in people who have used cortisone for a long time for asthma, rheumatism, or other reasons and then suddenly stopped the medication.
• Cancer. Adrenal insufficiency can develop in people with cancer in other organs due to the risk of metastasis.
• HIV/AIDS. Infections related to immune system weakening can affect the adrenal glands.

Diagnosis

Addison's disease is diagnosed with blood tests and stimulation tests. Diagnosis can take time due to the insidious onset of symptoms.

• Blood tests. Cortisol and ACTH levels are checked in a blood sample taken early in the morning. In Addison's disease, cortisol comes back low while ACTH comes back high. Additionally, sodium, potassium, blood sugar, and complete blood count are also checked.
• ACTH stimulation test (Cosyntropin test). This is the cornerstone of diagnosis. Synthetic ACTH hormone is injected and it is measured whether the adrenal glands respond to this stimulation. Healthy glands increase cortisol production. In Addison's disease this response does not occur or remains insufficient.
• Autoimmune antibodies. Antibodies such as 21-hydroxylase antibody are measured to confirm autoimmune Addison's disease.
• Imaging. The size and structure of the adrenal glands are evaluated with computed tomography (CT). In damage from tuberculosis or cancer, enlargement or calcification is seen in the glands. In autoimmune Addison's disease, the glands have shrunk.
• Pituitary imaging. If secondary insufficiency is suspected, the pituitary gland is examined with brain MRI.

Treatment

Treatment of Addison's disease is based on replacing the missing hormones with medications. This treatment is lifelong but with correct application, a completely normal life is possible.

• Cortisol replacement therapy. Hydrocortisone is the most commonly used medication. It is usually taken two or three times a day in accordance with the body's natural cortisol secretion rhythm. Prednisone or dexamethasone can be used as alternatives. The dose is adjusted according to the person's needs.
• Aldosterone replacement therapy. Fludrocortisone is used to maintain salt and water balance. It is usually taken once a day. This medication is critically important in maintaining blood pressure.
• Stress dosing. This is one of the most critical concepts in Addison's disease treatment. When the body encounters situations like febrile illness, surgery, injury, or intense stress, it normally needs to produce more cortisol. However, in Addison's disease this increase cannot occur. For this reason, in such situations, the cortisol dose must be increased with the doctor's guidance. Not knowing the stress dose can cause an Addison's crisis.
• Emergency injection kit. People with Addison's disease must always carry a hydrocortisone injection with them. When medication cannot be taken orally due to vomiting or clouding of consciousness, this injection saves lives. Family members of the patient should also be taught how to administer this injection.
• Treatment of the underlying cause. In tuberculosis-related Addison's disease, tuberculosis treatment is applied. However, this treatment does not restore the adrenal glands; hormone treatment must continue.

Complications

When Addison's disease is well managed, most patients lead a normal life. However, serious complications can develop if care is not taken.

• Addison's crisis (Acute adrenal insufficiency). This is the most dangerous complication. In stressful situations like infection, surgery, or injury, when cortisol need increases but an extra dose has not been taken or medications cannot be taken, a crisis develops. It runs a course of sudden severe pain, very low blood pressure, shock, and loss of consciousness. It is life-threatening if emergency intravenous cortisol and fluid treatment is not given.
• Bone loss. Long-term high-dose cortisol treatment can reduce bone density. However, this risk can be minimized with treatment at the correct doses.
• Growth problems. The disease that is not adequately controlled in children can negatively affect growth.
• Accompanying autoimmune diseases. In people with autoimmune Addison's disease, the risk of developing thyroid disease, type 1 diabetes, or other autoimmune diseases increases. Regular screening is therefore important.

Living with Addison's Disease

Addison's disease is a lifelong condition. However, this doesn't mean your life will be restricted. Thousands of Addison's patients are building careers, playing sports, raising children, and living life to the fullest. The key is knowing your disease well and being prepared for possible crisis situations.

Medication Management

Your medications will become a part of your life and that is completely normal. Taking your hydrocortisone and fludrocortisone at regular times every day keeps blood levels stable and helps you feel better. Never skip your medications and don't stop them without doctor approval.

Taking your cortisol dose with meals or right after reduces stomach discomfort. The morning dose is usually higher because the body's cortisol need is naturally greater in the morning hours. Work with your doctor for daily dose adjustment - the right dose varies from person to person.

Always carry spare medication with you. When traveling, take more medication than normal and always carry your medications in your carry-on luggage. Being left without medication due to lost baggage on flights creates serious risk for an Addison's patient.

Stress Dosing and Crisis Prevention

Learning the concept of stress dosing thoroughly can save your life. When your body is sick, injured, or under intense stress, it normally needs more cortisol. As an Addison's patient, you need to provide this increase yourself.

The general rule is this: Double the dose for mild fever or mild illness. For high fever, severe illness, or situations requiring surgery, call your doctor and follow their instructions. If you cannot take your medications due to vomiting or diarrhea, go to the emergency room - this is an emergency.

Prepare your guide for situations requiring stress dosing. Together with your doctor, create a plan detailing what you need to do in different scenarios such as fever, mild illness, moderate illness, and surgery. Memorizing this plan can save your life.

Emergency Preparedness

Your emergency injection kit must always be with you. Learn how to administer the hydrocortisone injection and teach your loved ones too. One day you may be in a situation where you cannot administer it yourself - having someone nearby who knows this information at that moment is very important.

Carry a medical ID bracelet or necklace. A bracelet or card reading "Adrenal Insufficiency - Emergency Cortisol Required" enables the medical team to intervene quickly and correctly in an emergency. Also keep a card containing this information in your wallet.

Save your doctor's and emergency health line's numbers in your phone. Especially when traveling abroad or to a remote location, research local hospital and emergency room information in advance.

Nutrition and Hydration

If you are using fludrocortisone, it is important not to restrict salt. On the contrary, you may need to take extra salt especially in hot weather, during intense exercise, or when sweating. Salted crackers, soup, or electrolyte drinks can be useful during these times.

Be careful about low blood sugar. Avoid intermittent fasting or going without food for very long periods. Skipping meals can lower your blood sugar and you may feel very unwell. Always carry a small snack (like a banana, crackers, or fruit juice) with you.

Consume caffeine and alcohol in a controlled manner. Both affect the adrenal glands and can disrupt cortisol levels. You don't need to give them up completely but avoid going to excess. Observe how your body reacts to these substances.

Exercise and Physical Activity

Addison's disease is not a barrier to exercise. On the contrary, regular exercise improves your overall health, maintains bone density, and improves your mood. Walking, cycling, swimming, and yoga are safe options.

However, intense exercise increases cortisol need. Before doing very strenuous workouts, consult your doctor and ask if you can take a small extra dose beforehand if necessary. If you experience excessive fatigue, dizziness, or weakness after exercise, this may be a sign that your medication dose may need to be reviewed.

Be careful when exercising outdoors in hot weather. Sweating causes salt loss and this can create problems for an Addison's patient. Drink plenty of water and don't neglect taking extra salt.

Mental Health and Emotional Wellbeing

Living with a chronic illness can sometimes be emotionally challenging. Asking "Why me?", feeling angry at the illness, or feeling anxious about the future are completely human reactions.

Cortisol deficiency itself directly affects mood. When your treatment is well adjusted, your mood improves too. If you are feeling depressed or excessively anxious, report this to your doctor - your medication dose may need to be reviewed.

Accepting your condition is an important part of the healing process. Joining online and in-person support groups for Addison's patients connects you with people who understand you. Sharing experiences both provides practical knowledge and prevents you from feeling alone.

Inform your family and close circle. Telling them about your disease and what needs to be done in an emergency both puts your mind at ease and increases your safety.

Work Life and Daily Routine

Working full-time with Addison's disease is possible and many patients do this successfully. However, some adjustments may be needed. Create an appropriate environment to be able to take your medications at regular times at work too - keep your medications in your bag or on your desk.

Listen to your body more during stressful periods. Busy work periods, important presentations, or emotional stress can increase your cortisol need. During these periods, give yourself more time and consult your doctor if necessary.

Whether to share your condition with your employer is entirely up to you. However, it is especially important for at least one colleague near you to be aware of your situation in emergencies. You can at least teach one coworker where your emergency injection is and how to use it.

Pregnancy and Women's Health

Women with Addison's disease can get pregnant and have a healthy pregnancy. However, if you are planning pregnancy, it is important to discuss this with your doctor beforehand. Cortisol need increases during pregnancy and medication doses need to be adjusted.

Cortisol need rises greatly during labor. For this reason, the birth team needs to be aware of your Addison's disease during birth preparation. Being ready to administer intravenous cortisol is vitally important.

Menstrual irregularities can be seen in Addison's disease. This usually improves as your treatment is balanced. However, if it continues, inform your doctor.

Regular Follow-up

Regular blood tests and doctor checkups are essential for good management of your disease. Endocrinologist checkups once or twice a year are generally recommended. At checkups, cortisol and ACTH levels, electrolyte balance, blood pressure, and bone density are evaluated.

If you have autoimmune Addison's disease, thyroid functions and blood sugar should also be checked regularly. Because autoimmune diseases tend to occur together.

If your symptoms change, don't wait for the next appointment. If extreme fatigue is increasing, if your blood pressure is consistently low, or if new symptoms appear, call your doctor.

Preparing for Your Appointment

What you can do:

• Note your symptoms and how long you have been experiencing them
• Specify when fatigue, weight loss, or skin darkening began
• List all medications, vitamins, and supplements you are taking
• Share if there is a history of autoimmune disease in the family
• Mention if you have previously used corticosteroids long-term
• Write your questions down in advance

Questions you can ask your doctor:

• Is the Addison's disease diagnosis certain?
• What is the cause, is it autoimmune or something else?
• Is my medication dose correct?
• How and when should I apply the stress dose?
• For which symptoms should I go to the emergency room?
• How will I use the emergency injection?
• What should I pay attention to when traveling?
• Should my bone density be monitored?
• Is there a risk of other autoimmune diseases for me?
• How often should I have checkups?

Your doctor may ask you:

• When did fatigue begin and how severe is it?
• Have you noticed skin darkening?
• Has your salt craving increased?
• Do you experience dizziness when standing up?
• How much weight have you lost?
• Have you previously used corticosteroids long-term?
• Is there Addison's disease or autoimmune disease in the family?
• Do you have any other illnesses?