Secondary Hypertension

In around 5% of hypertensive people, the hypertension is due to an underlying cause.

  • Chronic Renal Disease
  • Primary Aldosteronism
  • Cushing Syndrome
  • Thyrotoxicosis
  • Phaeochromocytoma


Consider secondary hypertension in:

  • Patients with hypertension under 30
  • A sudden worsening of hypertension
  • Poor response to treatment


Clinical Presentation:

  • Raised Creatinine on initial assessment (suggesting renal disease)
  • Hypokalaemia (can suggest renovascular hypertension or hyperaldosteronism)
  • A jump in creatinine after starting an ACE-I (suggesting renovascular hypertension)