Paroxysmal hypertension

Paroxysmal hypertension is episodic high blood pressure, which may be due to stress of any sort or from phaeochromocytoma, a type of tumor involving the adrenal medulla. Patients with paroxysmal hypertension who test negative for phaeochromocytoma are said to be suffering from pseudophaechromocytoma, a disorder with no known cause.