The clinical evaluation of hypertension.

The incidence of secondary hypertension in clinical practice is probably below 5%. The majority of those cases are of renal origin. Extensive and costly investigations for rarer forms of hypertension therefore do not appear justified. A comprehensive medical history, plus a good physical exam and some critical laboratory analyses can uncover the great majority of primary and secondary forms of hypertension, allowing for the detection of additional risks factors. Current research trends will eventually provide newer approaches which may permit a better evaluation of the prognosis of hypertension, as well as the development of more efficient therapies.