Hi Orthostatic hypertension, or postural hypertension, is a medical condition consisting of a sudden increase in blood pressure when a person stands up. Orthostatic hypertension is diagnosed by a rise in systolic blood pressure of 20 mmHg or more when standing. Orthostatic diastolic hypertension is a condition in which the diastolic raises to 98 mmHg or over in response to standing The body s inability to regulate the blood pressure can be a type of dysautonomia. Postural orthostatic tachycardia syndrome is common with this condition Orthostatic hypertension can be secondary to vascular adrenergic hypersensitivity Renal arterial stenosis (narrowing of the kidney arteries) with nephroptosis (kidney drops on standing) have been known to cause orthostatic hypertension Aortitis (inflammation of the aorta) with nephroptosis: This orthostatic hypertension largely may be due to an activation of the renin system caused by nephroptosis and partly due to a reduced baroreflex sensitivity caused by aortitis There is not any official recommended treatments currently for orthostatic hypertension as the condition is still little known and can be due to different causes Some treatments which have been successfully used for this condition are medications doxazosin, carvedilol, captopril, and propranolol hydrochloride. Treatment of coexisting conditions e.g. hypovolemia. Pressure garments over the pelvis and the lower extremeties may be used as part of treatment, due to the blood pooling issue happening in many with the disorder. Hope this is helpful. Take care.