Hyperaldosteronism: What Patients Need to Know

Hyperaldosteronism is a condition in which the body makes too much aldosterone, a hormone that helps control blood pressure and salt balance. It commonly leads to high blood pressure and may cause low potassium, but many people improve with the right testing and treatment.

Overview: what hyperaldosteronism means

Hyperaldosteronism is a disorder in which the body produces too much aldosterone. Aldosterone is a hormone made by the adrenal glands, which sit on top of the kidneys. Its job is to help regulate sodium, potassium, and fluid balance. When aldosterone levels are too high, the body tends to retain salt and water and lose potassium, which can raise blood pressure.

Many patients first learn about hyperaldosteronism during an evaluation for high blood pressure that is difficult to control or appears at a younger age than expected. Others are tested after routine blood work shows a low potassium level. Because symptoms can be mild or absent, the condition is often overlooked unless a doctor specifically considers it.

Hyperaldosteronism is not a single disease. It includes different causes, most commonly primary aldosteronism, in which the adrenal glands themselves make too much aldosterone. Less often, the hormone excess is driven by another medical problem, which is called secondary hyperaldosteronism. Understanding the cause is important because treatment can be different in each case.

Symptoms and possible effects on the body

Some people with hyperaldosteronism feel completely well and have no noticeable symptoms. In these cases, the condition may be found only because blood pressure remains high despite treatment, or because laboratory tests show low potassium. This is one reason why the condition deserves careful attention in people with resistant hypertension.

When symptoms do occur, they are often related to high blood pressure or low potassium. People may experience headaches, muscle weakness, fatigue, muscle cramps, frequent urination, increased thirst, or episodes of palpitations. Severe potassium loss can occasionally lead to tingling, constipation, or abnormal heart rhythms.

Over time, untreated excess aldosterone can affect more than blood pressure alone. It may increase strain on the heart, kidneys, and blood vessels, even when blood pressure numbers are only moderately elevated. For this reason, diagnosing hyperaldosteronism can be important not just for symptom relief but also for long-term cardiovascular health.

• Common clue: high blood pressure that is hard to control
• Possible lab finding: low potassium, though potassium can also be normal
• Possible symptoms: weakness, cramps, fatigue, thirst, frequent urination
• Long-term concern: increased heart and kidney risk if untreated

Causes and risk factors

The main forms of hyperaldosteronism are primary and secondary. In primary aldosteronism, the adrenal glands produce too much aldosterone on their own. This may happen because of a small benign adrenal growth called an aldosterone-producing adenoma, or because both adrenal glands are overactive, a condition often called bilateral adrenal hyperplasia. Rare inherited forms can also occur.

Secondary hyperaldosteronism develops when another condition signals the adrenal glands to make more aldosterone. This may happen in situations that reduce blood flow to the kidneys or activate the body’s renin-angiotensin-aldosterone system. Examples include narrowing of the arteries that supply the kidneys, some forms of kidney disease, heart failure, liver disease with fluid retention, and certain hormonal or fluid-balance disorders.

Doctors may suspect hyperaldosteronism in patients with resistant hypertension, hypertension with low potassium, an adrenal nodule found on imaging, sleep apnea, or a family history of early high blood pressure or stroke. It can also be considered in people whose blood pressure rises despite following treatment carefully. Because the condition belongs to the endocrine system, evaluation is often coordinated with specialists familiar with endocrine and metabolic disorders.

How doctors diagnose hyperaldosteronism

Diagnosis usually begins with a review of symptoms, blood pressure history, medications, and family history. A doctor will also look at potassium levels and kidney function. The most common screening test compares aldosterone and renin levels in the blood. This is often called the aldosterone-to-renin ratio. If the ratio suggests excess aldosterone, additional testing is usually needed.

Confirmatory testing may involve blood or urine studies designed to show whether aldosterone remains inappropriately high under controlled conditions. Because many blood pressure medicines can affect results, the care team may adjust medications before testing when it is safe to do so. Interpreting these tests correctly is important, since dehydration, salt intake, and other conditions can influence hormone levels.

Once hyperaldosteronism is confirmed, the next step is to find the source. Imaging such as MRI or CT may be used to look at the adrenal glands, but scans alone do not always tell whether one gland or both glands are responsible. In selected cases, doctors may recommend adrenal vein sampling, a specialized procedure that compares hormone production on each side. Accurate diagnosis helps guide whether treatment should focus on medication or surgery.

Treatment options and what patients can expect

Treatment depends on the underlying cause of hyperaldosteronism, the person’s overall health, and whether one adrenal gland or both are affected. When only one adrenal gland is producing excess aldosterone, surgery to remove that gland may be recommended. This is often done using minimally invasive techniques. In many patients, surgery improves blood pressure control and corrects low potassium, although some still need blood pressure medicine afterward.

If both adrenal glands are overproducing aldosterone, or if surgery is not the best option, treatment usually involves medicines that block aldosterone’s effects. These medications can help lower blood pressure and restore potassium balance. Regular follow-up is needed to monitor blood pressure, potassium, kidney function, and how well symptoms are improving.

Some patients may also need treatment for related blood pressure or cardiovascular issues, especially if the diagnosis has been delayed. Depending on the individual situation, the care plan may involve specialists in cardiology or endocrinology. Near the end of the diagnostic and treatment pathway, a multidisciplinary center can be helpful; Acibadem International’s JCI-accredited hospitals care for international patients with hyperaldosteronism through coordinated endocrine, imaging, and surgical services.

Living with hyperaldosteronism: self-care and prevention

There is no single way to prevent all cases of hyperaldosteronism, because some causes arise from adrenal gland changes that cannot be avoided. However, earlier detection can reduce the chance of complications. People with hard-to-control high blood pressure, repeated low potassium, or a family history of early hypertension should ask their doctor whether testing is appropriate.

Daily habits still matter. Following the treatment plan, taking medicines consistently, and attending follow-up appointments can make a meaningful difference. Patients are often advised to monitor their blood pressure at home and keep a record to share with their doctor. Maintaining a balanced eating pattern, limiting excess sodium, staying physically active when appropriate, and avoiding smoking may support overall heart and kidney health.

Patients should not stop blood pressure medicine or potassium supplements on their own, even if they feel better. Hormone-related blood pressure problems can persist silently. Safe management usually requires periodic blood tests and medical review, particularly after medication changes or surgery.

When to seek medical care

A person should seek medical evaluation if blood pressure remains high despite taking several medications, if low potassium keeps returning, or if there are symptoms such as muscle weakness, repeated cramps, unusual thirst, or frequent urination. These signs do not always mean hyperaldosteronism, but they can justify further testing.

Urgent care is needed for severe symptoms such as chest pain, severe shortness of breath, fainting, confusion, or signs of a possible abnormal heart rhythm, including persistent palpitations with dizziness. Very high blood pressure with severe headache, vision changes, or neurologic symptoms also needs prompt medical attention.

Patients who have been diagnosed should keep follow-up appointments even if they feel well. Hyperaldosteronism can affect long-term health quietly, and regular review helps ensure that blood pressure, potassium, and kidney function remain stable.

Frequently asked questions

Is hyperaldosteronism the same as high blood pressure?

No. Hyperaldosteronism is one possible cause of high blood pressure, not a synonym for it. It refers to excess production of aldosterone, which can lead to hypertension and changes in potassium levels.

Can hyperaldosteronism occur even if potassium is normal?

Yes. Although low potassium is a classic clue, many people with hyperaldosteronism have potassium levels in the normal range. This is why the condition can be missed unless specific hormone testing is done.

Is hyperaldosteronism curable?

Some forms can be effectively cured or greatly improved, especially when a single adrenal gland is responsible and surgery is appropriate. Other forms are usually managed long term with medication and regular follow-up. In both situations, treatment can substantially improve blood pressure control and reduce health risks.

What kind of doctor treats hyperaldosteronism?

Hyperaldosteronism is often managed by an endocrinologist, sometimes together with a nephrologist, cardiologist, radiologist, or endocrine surgeon. The exact team depends on the cause, the severity of hypertension, and whether surgery is being considered.

How is primary aldosteronism different from secondary hyperaldosteronism?

Primary aldosteronism begins in the adrenal glands themselves, which produce too much aldosterone independently. Secondary hyperaldosteronism happens when another condition stimulates the adrenal glands to increase aldosterone production. Distinguishing between them is important because treatment strategies differ.

Will treatment stop all blood pressure medicine?

Not always. Some patients need fewer medicines after treatment, while others still require blood pressure medication, especially if hypertension has been present for a long time. The goal is better control, safer potassium levels, and lower long-term cardiovascular risk.

References

• World Health Organization
• National Institute of Diabetes and Digestive and Kidney Diseases
• Endocrine Society
• American Heart Association
• National Institutes of Health

This article is for general information only and is not a substitute for professional medical advice. Please consult a qualified doctor about your individual situation.