to other disorders Essential hypertension Other kinds of dysautonomia may coexist, e.g., postural orthostatic tachycardia syndrome (POTS) is common with this condition, orthostatic hypotension with the BP going both high and low at times due to autonomic dysfunction Type 2 diabetes Vascular adrenergic hypersensitivity: Orthostatic hypertension can be secondary to this Anorexia Nervosa: Many people suffering From anorexia experience orthostatic hypertension Hypovolemia can cause orthostatic hypertension 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" Pheochromocytoma Risks Blood pressure variability is associated with progression of target organ damage and cardiovascular risk. Orthostatic hypertension was positively associated with peripheral arterial disease. Increased occurrence of silent cerebrovascular ischemia Systolic orthostatic hypertension increases stroke risk. Orthostatic hypertension was associated with increased all-cause mortality. Diagnosis The condition can be assessed by a tilt table test. Treatments Currently, no treatments are officially recommended for orthostatic hypertension, as it is still little known and has various causes. Hence, treatment for those with this disorder is trial and error. 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, also is used. Some specialists in severe cases give saline intravenously for hypovolemia, which, if it is the cause, brings the orthostatic hypertension down to a safe level. Pressure garments over the pelvis and the lower extremities may be used as part of treatment, due to the blood pooling issue occurring in many with the disorder. Epidemiology The prevalence of this condition has been studied in various populations. In a study conducted in 1922, it was found that 4.2% of 2000 apparently healthy aviators aged 18 to 42 years had an increase in diastolic blood pressure from below 90 mmHg while supine to above 90 mmHg in the upright posture. Study which defined orthostatic hypertension as a sustained increase in systolic blood pressure of at least 20 mmHg and/or diastolic blood pressure of at least 10 mmHg within 3 minutes of standing, have reported a prevalence rate of orthostatic hypertension ranging from 5% to 30%. This range is generally consistent with the prevalence of orthostatic hypotension. See