Primary Aldosteronism

Primary Aldosteronism (PA) is an endocrine disorder characterized by the autonomous, inappropriate excess production of aldosterone by the adrenal cortex. This excess is independent of its primary regulators, angiotensin II and potassium. The condition leads to increased sodium retention, urinary potassium excretion, volume expansion, and suppressed plasma renin activity, manifesting clinically as severe or resistant hypertension and hypokalemia.

PA is primarily caused by:

• Bilateral Idiopathic Adrenal Hyperplasia (IAH): Accounts for approximately 60% of cases.


• Aldosterone-Producing Adenoma (APA): Also known as Conn's syndrome, accounting for approximately 35% of cases.


• Unilateral Adrenal Hyperplasia (UAH): Uncommon (<2% of cases).

Excess aldosterone binds to the mineralocorticoid receptors (MR) in the principal cells of the renal cortical collecting duct. This upregulates the epithelial sodium channel (ENaC) and the basolateral Na+/K+-ATPase pump. This molecular cascade drives:

1. Sodium Reabsorption: Leads to plasma volume expansion and systemic arterial hypertension.


2. Potassium and Hydrogen Secretion: Promotes hypokalemia and metabolic alkalosis. Over time, the chronic volume expansion triggers the "aldosterone escape" phenomenon, stabilizing extracellular fluid volume and preventing overt edema.

PA is the most common cause of secondary hypertension, affecting 5% to 10% of all hypertensive patients and up to 20% of patients with resistant hypertension. It most frequently presents in adults aged 30 to 50, with a similar prevalence between males and females, though aldosterone-producing adenomas are more common in females.

• Resistant hypertension (uncontrolled on three medications, including a diuretic)
• Hypertension accompanied by spontaneous or diuretic-induced hypokalemia
• Hypertension with an adrenal incidentaloma
• Onset of hypertension at a young age (<40 years)
• Family history of early-onset hypertension or premature stroke

• Vital Signs: Elevated systolic and diastolic blood pressure.
• Neuromuscular: Decreased deep tendon reflexes or muscle weakness (if hypokalemia is severe).
• Cardiovascular: Typically no peripheral edema (due to aldosterone escape), though signs of left ventricular hypertrophy may be present.

Test Name: Plasma Aldosterone Concentration (PAC) Type: Blood Test

• Purpose: Measure direct concentration of circulating aldosterone.


• Expected Findings: Elevated (>15 ng/dL).


• Interpretation: Suggestive of primary or secondary hyperaldosteronism.

• Purpose: Assess renin enzyme activity.


• Expected Findings: Suppressed (<1.0 ng/mL/h).


• Interpretation: Confirms low-renin state indicative of primary autonomous mineralocorticoid excess.


• Test Name: Serum Potassium


• Type: Blood Test


• Purpose: Assess electrolyte status.


• Expected Findings: Hypokalemia (<3.5 mEq/L) in ~30-40% of cases.


• Interpretation: Supports the diagnosis but its absence does not rule out PA.

Adrenal Computed Tomography (CT) Scan Purpose: First-line imaging to detect adrenal nodules, rule out adrenal carcinoma, and map adrenal anatomy.

• Typical Findings: Unilateral micro- or macro-adenoma (usually <2 cm) or bilateral adrenal thickening/nodularity.


• Clinical Importance: Indispensable for anatomical planning prior to Adrenal Venous Sampling (AVS).

• Essential Hypertension: Normal or low aldosterone levels, normal renin-aldosterone ratio.

• Liddle Syndrome: Autosomal dominant disorder mimicking PA, but presenting with both suppressed aldosterone and suppressed renin.

• Left ventricular hypertrophy and congestive heart failure
• Myocardial infarction and stroke
• Atrial fibrillation
• Chronic kidney disease (CKD) secondary to long-term glomerular hyperfiltration

Unilateral adrenalectomy cures hypertension in approximately 50% of patients with an APA and significantly improves blood pressure control in the remainder. Medical therapy with MRAs successfully controls blood pressure and normalizes potassium levels in the vast majority of patients with bilateral disease.

No primary prevention methods exist. Secondary prevention relies on the early screening of hypertensive patients who meet screening criteria to prevent target-organ damage.

The following homeopathic remedies have been historically indicated for symptoms associated with Primary Aldosteronism. Selection should be based on individualized symptom totality and constitutional assessment.

• Homeopathy by Hadhrat Mirza Tahir Ahmad (r.a.) — Primary clinical reference
• Robin Murphy — Lotus Materia Medica (3rd Edition)
• William Boericke — Pocket Manual of Homœopathic Materia Medica & Repertory
• ICD-10/ICD-11 Classification — World Health Organization
• Harrison's Principles of Internal Medicine (Reference Standard)

This clinical reference profile is compiled from authoritative medical sources for educational purposes. Always verify clinical data with current medical guidelines.

🔬 Lab Report Analyzer (Diagnostic Verification)

Upload your laboratory bloodwork PDF or paste your report text to automatically extract markers, detect units, and identify reference range variances related to Primary Aldosteronism.