Hyperaldosteronism: Symptoms, Causes, Diagnosis, and Treatment

What Is Hyperaldosteronism?

Hyperaldosteronism means your adrenal glands (the little “stress-hat” glands sitting on top of your kidneys)
are producing too much aldosterone. Aldosterone helps your body manage:

• Sodium (how much salt you hold onto)
• Potassium (how much you get rid of)
• Water balance (because water follows sodium like a loyal sidekick)

When aldosterone runs high, your kidneys hold onto more sodium and water. That extra fluid volume can push blood pressure up.
Meanwhile, your body may dump potassium, which can cause symptoms like weakness or cramps when it gets low enough.

Primary vs. Secondary: the two big “why” categories

Hyperaldosteronism comes in two main types:

• Primary hyperaldosteronism (often called primary aldosteronism or Conn’s syndrome):
  the problem starts in the adrenal glands themselves.
• Secondary hyperaldosteronism:
  the adrenal glands are responding to another problem in the body (often something affecting kidney blood flow or fluid balance).

Why it matters more than “just high blood pressure”

Not all high blood pressure is created equal. In primary aldosteronism, excess aldosterone can have direct effects on the heart,
blood vessels, and kidneysbeyond the numbers you see on a cuff. The good news: it’s often treatable,
and sometimes potentially curable (especially when one adrenal gland is the troublemaker).

Hyperaldosteronism Symptoms

Here’s the tricky part: many people don’t “feel” high blood pressure. That’s why hypertension is called a silent condition.
Hyperaldosteronism can be silent toountil labs or complications wave a red flag.

Most common symptom: high blood pressure (especially stubborn high blood pressure)

The most common sign is hypertension that may:

• Start earlier than expected (sometimes in the 20s–40s)
• Require multiple medications
• Stay high despite appropriate treatment (often called resistant hypertension)

Symptoms related to low potassium (hypokalemia)

Some people develop low potassium, which can cause:

• Muscle weakness, heaviness, or cramps
• Fatigue that doesn’t match your life circumstances (and no, “because Mondays” doesn’t count)
• Tingling or numbness
• Muscle spasms
• In severe cases: temporary paralysis or abnormal heart rhythms
• Increased thirst and frequent urination (your kidneys can get a little dramatic when electrolytes are off)

Symptoms related to high blood pressure

If blood pressure is significantly elevated, you might notice:

• Headaches
• Dizziness
• Blurred vision or vision changes
• Shortness of breath (especially if the heart is strained)
• Chest discomfort (always take this seriously)

Can you have hyperaldosteronism with normal potassium?

Yes. Many people with primary aldosteronism have normal potassium levels.
So “my potassium is fine” doesn’t automatically rule it out.
That’s one reason clinicians often use hormone testing (aldosterone and renin) instead of relying only on electrolytes.

Causes of Hyperaldosteronism

Primary hyperaldosteronism (primary aldosteronism)

Primary hyperaldosteronism means the adrenal glands are producing aldosterone more independently than they should.
Common and important causes include:

• Aldosterone-producing adenoma: a benign adrenal tumor that makes extra aldosterone.
  (Benign doesn’t mean “harmless,” but it does mean it isn’t cancer.)
• Bilateral adrenal hyperplasia: both adrenal glands make too much aldosterone because the aldosterone-producing tissue is overactive.
• Unilateral adrenal hyperplasia: one gland is overgrown/overactive.
• Familial (genetic) forms: certain inherited conditions can increase aldosterone production.
• Rarely, adrenal cancer: very uncommon, but part of the differential diagnosis when imaging and labs look concerning.

Secondary hyperaldosteronism

Secondary hyperaldosteronism is usually driven by the body sensing (or mis-sensing) that it needs to raise blood pressure or conserve fluid.
Triggers often involve kidney blood flow or fluid balance, such as:

• Renal artery narrowing (reduced blood flow to the kidney can stimulate the renin-angiotensin-aldosterone system)
• Heart failure (the body tries to compensate for reduced effective circulation)
• Liver disease with fluid retention (like cirrhosis)
• Nephrotic syndrome or other kidney conditions affecting protein/fluid balance
• Diuretic use (sometimes contributes by shifting fluid and electrolyte signals)

Who should consider being evaluated?

Many specialists recommend thinking about primary aldosteronism when someone has:

• Resistant hypertension (BP high despite 3 medications, commonly including a diuretic)
• High blood pressure plus low potassium (especially without a clear cause)
• High blood pressure with an adrenal “incidentaloma” (an adrenal lump found on imaging for another reason)
• Early-onset hypertension or a strong family history of early strokes or difficult-to-control BP

Some newer guideline approaches are even broader, suggesting screening across all people with hypertension where feasible,
because underdiagnosis is common and targeted treatment can change outcomes.

How Hyperaldosteronism Is Diagnosed

Diagnosing hyperaldosteronism is less like “one magic test” and more like a well-structured detective story:
first you screen, then you confirm, then (if it’s primary) you figure out whether one adrenal gland or both are responsible.

Step 1: Basic labs and clinical clues

Many people first get attention because of:

• Persistent high blood pressure
• Low potassium on a routine blood test
• Symptoms like weakness, cramps, or frequent urination

Clinicians often check electrolytes (including potassium), kidney function, and sometimes an ECG if potassium is very low or symptoms are concerning.

Step 2: Screening test aldosterone and renin (the ARR)

The most common screening approach measures:

• Plasma aldosterone (how much aldosterone is circulating)
• Renin (a kidney-related signal that normally helps regulate aldosterone)

In primary aldosteronism, aldosterone is often relatively high while renin is suppressed. The result is an elevated
aldosterone-to-renin ratio (ARR).

Medication effect: a common “gotcha”

Several blood pressure medications can affect aldosterone and renin levels. That doesn’t mean you can’t be tested,
but it does mean your clinician may adjust medications before testing or interpret results carefully.
Never stop BP meds on your ownbecause “uncontrolled hypertension” is not a fun hobby.

Step 3: Confirmatory testing (proving aldosterone won’t behave)

If screening is positive, clinicians often use a confirmatory test to show aldosterone remains “inappropriately high”
even when the body should suppress it. Depending on the situation and local practice, this may include:

• Saline infusion test (fluid is given; aldosterone should normally drop)
• Oral sodium loading (a higher salt intake with urine testing)
• Captopril challenge test (a medication challenge that influences hormone signaling)
• Fludrocortisone suppression test (more intensive, specialized testing)

Step 4: Subtype testing is it one adrenal gland or both?

If primary aldosteronism is confirmed, treatment depends on whether aldosterone overproduction is:

• Unilateral (one adrenal gland is responsible)
• Bilateral (both glands are overproducing)

Imaging (CT/MRI)

A CT scan of the adrenal glands can identify nodules or enlargement. But imaging alone can mislead,
because some adrenal nodules don’t produce hormonesand small hormone-producing lesions can be missed.

Adrenal vein sampling (AVS): the “which gland is guilty?” test

Adrenal vein sampling (AVS) is a specialized procedure where blood is sampled from the veins draining each adrenal gland
and compared to a peripheral blood sample. It helps determine whether excess aldosterone is coming from one side or both,
which can guide the choice between surgery and medication.

Secondary hyperaldosteronism: looking for the driver

If secondary hyperaldosteronism is suspected, clinicians focus on the underlying causeoften by evaluating kidney blood flow,
heart function, liver disease, or other fluid-balance conditions.

Hyperaldosteronism Treatment

Treatment depends on whether the condition is primary or secondary, andif primarywhether it’s coming from one adrenal gland or both.
The goals are straightforward:

• Control blood pressure
• Correct potassium (and other electrolyte) abnormalities
• Reduce long-term cardiovascular and kidney risk
• Help you feel better day-to-day

Treatment for primary aldosteronism

Option 1: Surgery (usually for unilateral disease)

If testing shows one adrenal gland is responsible (like an aldosterone-producing adenoma),
laparoscopic adrenalectomy (minimally invasive removal of the affected adrenal gland) may be recommended.
Many people see:

• Improved blood pressure control
• Reduced need for BP medications
• Normalization of low potassium

Not everyone is “cured” of hypertension after surgeryespecially if they’ve had high blood pressure for many years or have other risk factors
but targeted surgery can still meaningfully improve control and lower aldosterone-related harm.

Option 2: Medication (especially for bilateral disease or nonsurgical cases)

If both adrenal glands are overproducing aldosteroneor if surgery isn’t the right fittreatment usually involves medications that block aldosterone’s effects:

• Mineralocorticoid receptor antagonists (MRAs):
  • Spironolactone
  • Eplerenone (often used if spironolactone side effects are an issue)
• Alternative/add-on options: some patients use other potassium-sparing approaches (like amiloride) based on clinician guidance.

Because these medications can raise potassium and affect kidney function, clinicians usually monitor labs after starting or adjusting doses.

Side effects: what people commonly ask about

MRAs can be very effective, but side effects vary by medication and individual. For example:

• Spironolactone can cause breast tenderness or enlargement and menstrual changes in some people.
• Eplerenone tends to have fewer hormone-related side effects but may be more expensive depending on insurance.

If side effects occur, your clinician can adjust the dose, switch medications, or tailor the planso don’t “tough it out” in silence.

Treatment for secondary hyperaldosteronism

For secondary hyperaldosteronism, the plan focuses on the underlying cause (for example, improving kidney blood flow issues or managing heart failure),
while also controlling blood pressure and electrolytes.
Aldosterone-blocking medication may still be used in many casesespecially if blood pressure remains elevated or potassium is low.

Lifestyle support (not a cure, but a powerful teammate)

Lifestyle changes can’t “turn off” a hormone-producing adrenal adenoma, but they can improve blood pressure and overall heart health:

• Moderate sodium intake (your clinician can recommend a realistic goal)
• Heart-healthy eating pattern (think DASH-style or similar)
• Regular activity appropriate for your fitness and BP control
• Limit nicotine and keep alcohol moderate
• Consistent sleep (yes, your hormones care about your bedtime)

Living With Hyperaldosteronism: Practical Tips and Outlook

What follow-up usually involves

Whether you’re treated with medication or surgery, follow-up matters. A typical plan may include:

• Home blood pressure monitoring (with a validated cuff)
• Periodic blood tests (potassium, kidney function, sometimes renin/aldosterone depending on the plan)
• Medication adjustments to avoid side effects and optimize BP
• Long-term cardiovascular risk management (cholesterol, blood sugar, exercise, etc.)

When to seek urgent care

Get urgent medical attention if you have symptoms that could suggest a hypertensive emergency or severe electrolyte problem, such as:

• Chest pain, severe shortness of breath, or fainting
• Sudden weakness on one side, trouble speaking, or facial drooping
• Severe headache with confusion or vision loss
• Severe muscle weakness, palpitations, or feeling like your heart is “skipping”

Outlook

The outlook for hyperaldosteronism is often very good when it’s recognized and treated. Many people achieve better blood pressure control,
improve potassium levels, and reduce long-term risks. The biggest enemy is usually not the condition itselfit’s the condition going unnoticed for years.

A quick “doctor visit” prep checklist

• Bring a list of blood pressure meds and supplements (including doses)
• Bring recent BP readings (home logs are gold)
• Ask whether aldosterone/renin testing is appropriate for your situation
• Ask how your meds might affect testing and interpretation
• If primary aldosteronism is confirmed, ask whether adrenal vein sampling is recommended before deciding on surgery

FAQs About Hyperaldosteronism

Is hyperaldosteronism the same as primary aldosteronism?

Hyperaldosteronism is the umbrella term (too much aldosterone). Primary aldosteronism is a specific type where the adrenal glands are the root cause.

Can teenagers get hyperaldosteronism?

It’s more common in adults, but it can occur in younger peopleespecially in certain genetic forms. If someone has unusually early or severe hypertension,
clinicians may consider secondary causes, including hormone-related ones.

Will cutting salt fix it?

Reducing sodium can help blood pressure, but it usually doesn’t eliminate the underlying hormone overproduction in primary aldosteronism.
Think of it as turning down the volume while you also fix the speaker.

Is it curable?

Sometimes. Unilateral disease treated with adrenalectomy can be potentially curative for the aldosterone excess and can dramatically improve BP control.
Bilateral disease is usually managed long-term with medication.

How long does diagnosis take?

It varies. Some people move quickly from screening to confirmatory testing to subtype testing. Others need medication adjustments or specialized testing access.
If your blood pressure is hard to control, it’s worth advocating for a thorough evaluation.

Real-World Experiences: What People Often Go Through (and What They Learn)

Hyperaldosteronism doesn’t usually show up with a flashing neon sign that says, “Hello, I’m a hormone problem!”
Real life is messier. People often describe a slow buildup of clues that only make sense in hindsight.
Here are patterns clinicians hear again and againshared here as educational examples, not as a substitute for medical advice.

1) “Why is my blood pressure still high? I’m doing everything right.”

A common story starts with someone who’s genuinely trying: they’ve reduced fast food, they walk most days, they don’t smoke,
and they take their blood pressure pills as directed. And yet the numbers stay stubborn.
They add a second medication. Then a third. At some point, it begins to feel like the blood pressure is “immune” to treatment.

In that scenario, the emotional experience can be surprisingly heavyfrustration, worry, and sometimes shame,
as if blood pressure is a moral scorecard. (It’s not.) When a clinician finally tests aldosterone and renin, people often describe a weird mix of relief and annoyance:
relief that there may be a specific explanation, and annoyance that it wasn’t considered earlier.
The takeaway many patients share: resistant hypertension deserves a deeper look.

2) “My potassium keeps dropping, and nobody knows why.”

Another classic route is through lab work. Someone gets routine blood testsmaybe after muscle cramps, fatigue, or a checkup
and potassium is low. They’re told to eat bananas or take supplements.
That helps… briefly. Then it drops again. Maybe it’s blamed on stress, diet, or dehydration.
Meanwhile, the person notices they’re extra thirsty or peeing more often, but they chalk it up to “drinking more water” or “getting older.”

When hyperaldosteronism is finally identified, patients often say the explanation feels oddly satisfying:
“So it’s not just randomI’m losing potassium because a hormone is telling my kidneys to dump it.”
Once treatment starts (often an aldosterone blocker), many people notice practical improvements:
fewer cramps, less “dead battery” fatigue, and more stable lab results.
The lesson patients repeat: persistent low potassium deserves an explanation, especially alongside high blood pressure.

3) The decision point: medication vs. surgery

For primary aldosteronism, the biggest “fork in the road” is whether the extra aldosterone is coming from one adrenal gland or both.
That’s where imaging andsometimesadrenal vein sampling come in.
People often describe AVS as intimidating mainly because it sounds intense (“catheters… veins… sampling… oh no.”),
but many report it was manageable and worth it because it clarified the treatment path.

If results suggest one gland is responsible and surgery is offered, experiences vary:
some people feel excited by the idea of a potential fix; others feel anxious about losing an adrenal gland.
(You can live with one adrenal glandyour body is surprisingly adaptable.)
People who go the surgical route often describe the recovery as smoother than expected, especially with minimally invasive techniques.
Many still need some BP medication afterward, but often fewer, and potassium problems frequently resolve.

4) Medication experiences: “It works… but let’s talk side effects.”

For those treated medicallyespecially in bilateral diseasespironolactone or eplerenone can be game-changers.
Patients often describe the first win as “my BP finally moved” or “my labs stopped swinging.”
But real-life use may involve dose adjustments and monitoring.

Some people on spironolactone notice hormone-related side effects (like breast tenderness or menstrual changes), which can be stressful or embarrassing.
A consistent message from experienced clinicians: side effects are not a “you problem”they’re a medication-management problem.
Switching to eplerenone, adjusting the dose, or changing the plan can help.
People also learn that follow-up labs aren’t busywork; they’re how you avoid potassium rising too high or kidney function changing.

5) The long-game mindset: a condition you manage, not a label you become

Over time, many people say hyperaldosteronism becomes less scary once it’s named and treated.
The daily routine might include checking BP at home, taking medication consistently, and keeping up with labs.
The psychological shift is often the biggest win: less uncertainty, more control.

If there’s one “experienced patient” tip that comes up repeatedly, it’s this:
track your dataBP readings, symptoms, medication changes, and lab results.
Not obsessively, but consistently. That information helps your clinician tailor treatment and helps you see progress that can be easy to miss day-to-day.

Conclusion

Hyperaldosteronism is a classic example of a condition that’s both sneaky and treatable.
It can hide behind the mask of “regular” hypertension, but it behaves differentlyand it often responds dramatically to targeted therapy.
If you or someone you care about has hard-to-control blood pressure, unexplained low potassium, or a pattern that just doesn’t add up,
it’s worth asking whether aldosterone could be part of the story.

The best outcome usually comes from a simple sequence: recognize the possibility, test thoughtfully, confirm carefully,
and treat specifically. Your adrenal glands might be small, but when they overachieve, they can make a big messone you can often clean up with the right plan.