14 Facts About Adrenal Insufficiency

2. Salt Cravings Are Very Common

If you have adrenal insufficiency, you may notice strong cravings for salty foods. You might want chips, pickles, or salty snacks more than usual. This is not just a food preference and often links to changes in your hormone levels. Your adrenal glands make a hormone that helps control sodium in your body.

Sodium is a mineral found in salt which helps manage fluid levels and supports healthy blood pressure. When this hormone level drops, your body loses more sodium through urine. Low sodium can lead to dizziness, low blood pressure, fatigue, and headaches.

In response, your body pushes you to seek out salt. Craving salt becomes a signal that something is off. Many people with adrenal insufficiency report that salty foods taste especially good during flare-ups. You may even add extra salt to meals without thinking about it.

Eating salt may give short-term relief if your sodium level is low. However, the craving itself points to an underlying hormone problem. When treatment includes the right hormone replacement therapy, these intense salt cravings often decrease.

3. Stress Can Be Fatal

Your body relies on cortisol to handle stress. This hormone keeps your blood pressure, blood sugar, and energy levels steady. If you have adrenal insufficiency, your body cannot raise cortisol when stress hits. Even a common infection, injury, or surgery can overwhelm your system.

When this happens, you can develop an adrenal crisis. This is a medical emergency that can become fatal without fast treatment. Signs of an adrenal crisis include severe weakness, dizziness or fainting, low blood pressure, nausea, vomiting, stomach pain, confusion, and trouble staying awake.

Stress does not only mean emotional strain. Physical stress, such as fever, dehydration, or trauma, places even greater demands on your body. Without enough cortisol, your organs cannot respond the way they should.

You must adjust your hormone replacement doses during times of illness or injury, based on your care plan. Many people carry an emergency injection of a cortidem andosteroid in case they cannot take pills by mouth.

4. There Are Three Types

Adrenal insufficiency comes in three main types. Each type affects your body in a different way, depending on where the problem starts. Primary adrenal insufficiency happens when your adrenal glands are damaged and is also called Addison disease. Your glands cannot make enough hormones like cortisol and aldosterone.

Autoimmune disease is the most common cause, but infections or genetic conditions can also lead to it. Secondary adrenal insufficiency starts in your pituitary gland. This small gland in your brain tells your adrenal glands when to make hormones. If it does not send the right signals, your adrenal glands do not produce enough cortisol. Long-term use of glucocorticoid medicines can also lead to this type if you stop them too quickly.

Tertiary adrenal insufficiency begins in another part of your brain called the hypothalamus. It controls the pituitary gland. When it does not work well, the chain of signals breaks down. This type often links to sudden changes in long-term steroid therapy, and all three types lower cortisol levels. However, only primary adrenal insufficiency usually affects aldosterone, which helps control your blood pressure and salt balance.

5. It Can Affect the Skin

Adrenal insufficiency can change how your skin looks. One of the most known signs is darkening of the skin. You may notice patches that look tan or brown, even if you have not been in the sun. This change happens most often in primary adrenal insufficiency or Addison disease.

When your adrenal glands do not make enough hormones, your body produces more of another hormone that can raise skin pigment. As a result, areas like your elbows, knees, knuckles, and skin folds may look darker. You might also see dark spots inside your mouth. The gums and inner cheeks can develop a bluish or brown shade.

These changes can appear slowly over time. Not everyone with adrenal insufficiency has darker skin. In some types, such as when the problem starts in the pituitary gland, skin color may stay the same. This difference can help doctors tell which type you have.

6. Long-Term Steroid Therapy Can Cause It

If you take oral corticosteroids for many weeks or months, your body may slow down its own cortisol production. Cortisol is a hormone your adrenal glands make to control blood pressure, blood sugar, and stress response. When outside steroids enter your body, your adrenal glands can go into a “rest” state.

This problem is more likely if you:

• Take oral corticosteroids for more than 3 to 4 weeks
• Use high doses
• Have several short courses in one year
• Combine oral, inhaled, or injected steroids

Over time, your brain sends fewer signals to your adrenal glands. The glands shrink and produce less cortisol. If you suddenly stop the steroid, your body may not make enough cortisol right away. The risk can last for months after you stop treatment. In some cases, it can continue for up to a year, especially after long or repeated courses.

7. It Can Cause Hypoglycemia

Adrenal insufficiency can cause low blood sugar, also called hypoglycemia. Your adrenal glands make cortisol, a hormone that helps keep your blood sugar in a normal range. When cortisol levels drop too low, your body struggles to raise blood sugar between meals or during stress.

You may notice symptoms that come on quickly, including shaking, sweating, dizziness, hunger, confusion, and weakness. If your blood sugar falls below 70 mg/dL, it is considered low for most people. In people without diabetes, levels below 55 mg/dL are often too low. Severe drops can lead to fainting, seizures, or even coma if not treated.

Children with adrenal insufficiency face a higher risk of low blood sugar. Illness, skipped meals, or long periods without food can trigger an episode. Adults can also develop hypoglycemia during infection, physical stress, or if they miss doses of hormone replacement therapy.

8. It’s Treatable

You can manage adrenal insufficiency with daily hormone replacement. Treatment replaces the hormones your adrenal glands do not make, mainly cortisol and sometimes aldosterone. Most people take an oral glucocorticoid each day, and some also need a mineralocorticoid to control salt and blood pressure.

You must take your medicine every day as prescribed. Skipping doses can make you feel weak, dizzy, or sick. With the right dose, many people live active and normal lives. Your dose may need to increase during stress. Illness, surgery, injury, or high emotional stress can raise your body’s need for cortisol.

In these times, your doctor may tell you to take extra glucocorticoid for a short period. In a severe emergency called an adrenal crisis, you need a fast-acting glucocorticoid injection right away. This can prevent low blood pressure, shock, and other serious problems. You or a family member can learn how to give this injection if needed.

9. Medical Diagnosis

Doctors diagnose adrenal insufficiency by reviewing your symptoms and ordering blood tests. You may report long-term fatigue, weight loss, low blood pressure, or skin changes. These signs often appear slowly, which can delay diagnosis. Your doctor will first check your blood for low cortisol levels.

Cortisol is a hormone your adrenal glands make to help your body handle stress, control blood pressure, and manage blood sugar. Low sodium and high potassium levels in your blood can also point to this condition. If results seem unclear, your doctor may order a stimulation test. This test measures how your adrenal glands respond after you receive a dose of a hormone that normally tells them to release cortisol.

If your cortisol level does not rise as expected, it suggests adrenal insufficiency. Imaging tests can also help, such as a CT scan to check the size and shape of your adrenal glands. An MRI can examine the pituitary gland in your brain, which controls adrenal hormone signals.

10. Common Symptoms

Adrenal insufficiency begins with mild symptoms that can gradually worsen. Fatigue, unexplained weight loss, and appetite changes are common early signs. Nausea, stomach pain, or vomiting may occur, especially during stress or illness.

Low blood pressure often causes dizziness or lightheadedness when standing up, and some people may faint. Muscle weakness and joint pain can make daily activities harder. Skin darkening, especially in primary adrenal insufficiency, may appear on elbows, knees, knuckles, or inside the mouth because the body produces more of a hormone that affects skin color.

Cravings for salty foods and increased thirst may develop as the body loses too much salt. In children, slow growth or delayed puberty can appear. Severe stress, such as an infection, can suddenly worsen symptoms and trigger a medical emergency.

11. Often Misdiagnosed

Adrenal insufficiency often hides behind common symptoms, leading to months of fatigue, weakness, or dizziness before anyone suspects a hormone problem. Many people first receive treatment for other conditions, as doctors may confuse it with depression, chronic fatigue, or stomach disorders. Weight loss, low appetite, or nausea may not immediately point to the adrenal glands.

Low blood pressure can mislead your care team, sometimes causing fainting that resembles heart or nerve issues. Other symptoms overlap with many illnesses, including ongoing fatigue that does not improve with rest, muscle weakness, and salt cravings. Skin darkening in some cases, along with low sodium or high potassium levels on blood tests, can also appear.

Because symptoms build slowly, many people adjust to feeling unwell and may attribute changes to stress or aging. This delay can increase the risk of a sudden adrenal crisis or a medical emergency. Clear hormone testing confirms the diagnosis and early recognition makes treatment safer and more effective.

12. It’s a Hormone Imbalance

When your adrenal glands do not make enough key hormones, adrenal insufficiency develops. These small glands on top of your kidneys control how your body handles stress, blood pressure, and blood sugar. The main problem involves low levels of cortisol and often aldosterone.

Cortisol helps you manage stress and keeps your blood sugar steady, while aldosterone controls sodium and potassium balance, which affects blood pressure and fluid levels. When these hormones drop too low, your body struggles to stay stable, which causes weakness, dizziness, or tiredness.

Your blood pressure can fall, especially when you stand up. Treatment replaces the missing hormones with corticosteroids and, if needed, mineralocorticoids. These medicines restore balance so your body can function more normally.

13. It May Take Months or Years to Show Up

Adrenal insufficiency often develops slowly, with changes building over months or even years. Your adrenal glands above the kidneys make hormones that help control energy, blood pressure, and your response to stress. As these glands begin to fail, hormone levels drop gradually, and your body may adjust at first, which hides the problem.

Early symptoms are easy to miss, such as increased fatigue, unexplained weight loss, or reduced appetite. Other slow changes include ongoing muscle weakness, dizziness when you stand up, cravings for salty foods, and mood changes such as irritability.

These signs can resemble everyday stress or aging. Because symptoms appear slowly, many people live with the condition for a long time before getting a diagnosis. You may not realize something is wrong until a major illness, injury, or stress puts extra strain on your body and worsens symptoms.

14. Risk Factors

Several factors can increase your risk of adrenal insufficiency, including immune system issues, certain medications, and damage to the adrenal glands. Autoimmune diseases, long-term corticosteroid use, and a family history of hormone problems are significant contributors.

If you have an autoimmune disease, your risk increases. In many cases, your immune system attacks your adrenal glands by mistake. This damage can lower hormone production over time. Long-term use of corticosteroid medication is another major risk factor. If you take these drugs for asthma, arthritis, or other inflammatory conditions and then stop them suddenly, your body may struggle to make enough natural hormones.

If cancer spreads to your adrenal glands, your risk also rises. Tumors can damage the glands and block normal hormone release. Family history plays a role in some cases. If close relatives have autoimmune disorders or inherited hormone problems, you may face a higher chance of developing this condition.