Secondary hyperaldosteronism is a condition where the adrenal glands produce excess aldosterone due to factors outside the adrenal glands. This often occurs in response to low blood flow to the kidneys, which can be caused by conditions like heart failure or renal artery stenosis. The increased aldosterone leads to sodium retention, potassium loss, and elevated blood pressure. Unlike primary hyperaldosteronism, which originates from the adrenal glands themselves, secondary hyperaldosteronism is a compensatory response to systemic issues. Diagnosis typically involves blood tests to measure aldosterone levels and imaging studies to assess kidney function. Treatment focuses on addressing the underlying cause.