Primary hyperaldosteronism is an often undiagnosed underlying cause of uncontrolled hypertension.

Underdiagnosis of this condition is a significant issue among hypertensives, especially those with resistant hypertension. As much as 30 percent of the population is likely to be affected, but that percentage will go even higher specifically talking about resistant hypertension. Many medical professionals are not trained in this particular field, so many patients don't receive the proper tests to find the cause of their hypertension.