Table 1.

Basic classification scheme for causes of monogenic hypertension.

Low renin level	Low aldosterone levels	Liddle syndrome Congenital adrenal hyperplasia Apparent mineralocorticoid excess Gellers syndrome
	Normal aldosterone levels	Gordon syndrome (pseudohypoaldosteronism type II)
	High aldosterone levels	Familial hyperaldosteronism type I (glucocorticoid-remediable aldosteronism) Familial hyperaldosteronism type II Familial hyperaldosteronism type III Familial hyperaldosteronism type IV
Adrenergic/sympathetic excess	High metanephrine and normetanephrine levels	Familial pheochromocytoma
Vascular smooth muscle proliferation		Hypertension and brachydactyly syndrome