Adrenal Insufficiency (Addison's Disease)
What is Adrenal Insufficiency (Addison's Disease)?
Adrenal insufficiency happens when your adrenal glands cannot make enough of the hormones your body needs to function. Your adrenal glands sit on top of your kidneys and produce essential hormones like cortisol and aldosterone. These hormones help regulate blood pressure, metabolism, stress response, and the balance of salt and water in your body.
Addison's disease is the most common form of primary adrenal insufficiency. It occurs when the adrenal glands themselves are damaged and stop working properly. This is different from secondary adrenal insufficiency, which happens when the pituitary gland in your brain fails to signal the adrenals correctly.
Without treatment, adrenal insufficiency can be life threatening. The good news is that once diagnosed, most people manage the condition well with hormone replacement. Early detection through blood testing helps catch the problem before it becomes serious.
Symptoms
- Extreme fatigue that gets worse over time
- Unexplained weight loss and decreased appetite
- Low blood pressure that drops when standing up
- Salt cravings and increased thirst
- Darkening of the skin, especially in skin folds and scars
- Muscle weakness and joint pain
- Nausea, vomiting, and diarrhea
- Irritability and depression
- Dizziness or fainting
- Low blood sugar levels
Symptoms often develop slowly over months. Many people ignore early signs because they seem mild or vague. Some people experience an adrenal crisis, a sudden and severe worsening that requires emergency medical care.
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Causes and risk factors
The most common cause of Addison's disease is autoimmune destruction. This means your immune system mistakenly attacks and damages your adrenal glands. About 70 to 80 percent of cases in developed countries happen this way. Other causes include tuberculosis, chronic infections, cancer spreading to the adrenals, bleeding into the adrenal glands, and genetic disorders.
Risk factors include having other autoimmune conditions like type 1 diabetes or thyroid disease. Family history of autoimmune disorders also increases risk. Long-term use of steroid medications can lead to secondary adrenal insufficiency if stopped suddenly. Certain infections and some medications can damage the adrenal glands over time.
How it's diagnosed
Doctors diagnose adrenal insufficiency through blood tests that measure hormone levels. Key markers include DHEA-Sulfate and sodium levels. Low or undetectable DHEA-S indicates that your adrenal cortex has lost its ability to produce adrenal hormones. DHEA-S is more sensitive than cortisol for catching early or partial adrenal insufficiency. Low sodium occurs because aldosterone deficiency causes your kidneys to lose salt and cortisol deficiency impairs how your body handles water.
Rite Aid's blood testing panel includes DHEA-Sulfate and sodium testing to help screen for adrenal problems. If results suggest adrenal insufficiency, your doctor will order additional specialized tests like an ACTH stimulation test to confirm the diagnosis. Early detection through regular blood work helps identify the condition before it becomes dangerous.
Treatment options
- Hormone replacement therapy with hydrocortisone or prednisone to replace cortisol
- Fludrocortisone to replace aldosterone and help balance salt and water
- Increase salt intake, especially during hot weather or exercise
- Eat regular meals to prevent low blood sugar
- Wear a medical alert bracelet identifying your condition
- Increase medication doses during illness, injury, or stress as directed by your doctor
- Keep emergency injection kit on hand for adrenal crisis
- Work with an endocrinologist who specializes in hormone disorders
- Monitor blood pressure and electrolyte levels regularly
- Avoid stopping steroid medications suddenly
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- Simple blood draw at your nearest lab
- Results in days, not weeks
- Share results with your doctor
Frequently asked questions
Addison's disease is a type of primary adrenal insufficiency where the adrenal glands themselves are damaged and cannot produce hormones. Adrenal insufficiency is the broader term that includes both primary forms like Addison's and secondary forms caused by pituitary problems. The symptoms and treatment are similar, but the underlying cause differs.
Yes, blood tests can catch signs of adrenal problems before symptoms become severe. DHEA-Sulfate levels drop early in adrenal insufficiency and are more sensitive than cortisol alone. Low sodium levels also indicate that your adrenals may not be producing enough aldosterone. Regular blood work helps identify these changes so you can get proper testing and treatment.
An adrenal crisis is a medical emergency with sudden severe symptoms. You may experience extreme weakness, confusion, severe vomiting and diarrhea, very low blood pressure, and loss of consciousness. This happens when your body faces stress like infection or injury but cannot produce enough cortisol. Anyone with adrenal crisis needs emergency treatment immediately.
No, these are completely different. Adrenal insufficiency is a real medical condition where your glands cannot produce enough hormones, confirmed by blood tests. Adrenal fatigue is not a recognized medical diagnosis and lacks scientific evidence. If you feel chronically tired, get proper blood work to check for real conditions like adrenal insufficiency, thyroid problems, or vitamin deficiencies.
Salt cravings happen because your body is losing too much sodium. When aldosterone levels are low, your kidneys cannot hold onto salt properly. Your body senses this sodium loss and triggers cravings to try to replace it. This is one of the classic signs that helps doctors recognize adrenal insufficiency.
Yes, most people with adrenal insufficiency live full, active lives with proper hormone replacement. You need to take medications every day and adjust doses during illness or stress. Carrying emergency medication and wearing a medical alert bracelet are important safety measures. Regular follow-up with your doctor ensures your treatment stays on track.
The skin darkening happens because high ACTH levels stimulate melanin production. When your adrenals fail, your pituitary gland makes more ACTH trying to get them to work. ACTH shares a chemical structure with melanin-stimulating hormone, so it causes increased pigmentation. This typically appears in skin folds, scars, and areas exposed to sun or friction.
Most doctors recommend blood work every 6 to 12 months once your treatment is stable. Your doctor will check electrolyte levels, blood sugar, and other markers to make sure your hormone replacement is working well. More frequent testing may be needed when adjusting medication doses or if you develop new symptoms.
Yes, any form of physical or emotional stress increases your body's need for cortisol. Since your adrenals cannot make more cortisol naturally, you need to increase your medication during stressful times. This includes illness, injury, surgery, dental procedures, and major life events. Your doctor will give you a plan for adjusting doses during stress.
Take your missed dose as soon as you remember if it is within a few hours. If it is almost time for your next dose, skip the missed one and continue your regular schedule. Never double up doses. Contact your doctor if you miss multiple doses or feel unwell, as this can lead to adrenal crisis.