Primary aldosteronism is the most frequent, curable cause of hypertension. Since the introduction of new screening methods, the incidence rate among hypertensive patients has risen from between 0.05%-2% to between 5%-10%. However, it is frequently ignored by most clinicians. We report on a case presenting with refractory hypertension, hypokalemia and periodic paralysis over a three year period. Endocrine tests and image studies performed during hospitalization proved the presence of an aldosterone-producing adenoma. After laparoscopic adrenectomy, the hypertension and hypokalemia subsided.