Essential hypertension is much more common
than is secondary hypertension; approximately 90% of cases of hypertension
involve essential (primary) hypertension.2 Both hyperthyroidism and
hypothyroidism can cause secondary hypertension. Other causes associated
with secondary hypertension include renal parenchymal disease, coarctation
of the aorta, and renovascular disease.1
- Causes of secondary hypertension occur more frequently than do those
of essential hypertension.
1. Beers MH, Berkow R, editors. The Merck manual of diagnosis
and therapy. 17th ed. Whitehouse Station (NJ): Merck Research Laboratories;
2. Dambro MR, editor. Griffiths 5-minute clinical consult.
Philadelphia: Lippincott Williams & Wilkins; 2000:528-9.
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