A case of pseudohypertension.

We report a case of pseudohypertension seen at our hospital. The true prevalence of this condition is unknown. We remind clinicians of Osler's manoeuvre (the palpability of the pulseless brachial artery) which can be used as a screening test for its presence. The diagnosis is made by documentation of normal intraarterial blood pressure with elevated values as measured by mercury sphygmomanometry. Antihypertensive therapy is not indicated and may be dangerous.