Can adrenal insufficiency cause high blood pressure?

Quite the opposite: Low cortisol level as its usually the case in ai, generally leads to low or low normal bp, not the contrary. If hypertension takes place in the presence of ai (and new in onset), then this may be an ominous sign as it may imply a cerebral (brain) insult either due to hypoglycemia or brain ischemia due to poor vascular perfusion. Please discuss this with your physician in a timely manner.

Rarely: Common forms of adrenal insufficiency are associated with low blood pressure. However, the adrenal gland functions to make many hormones, and certain rare genetic causes of ai are sometimes associated with high blood pressure. These are very rare. Adrenal hormone overproduction or the meds used to treat adrenal insufficiency can also cause one's BP to go high and so must be dosed carefully.

Adrenal ins.: Usually a cause of low blood pressure.

11beta OH deficiency: Much less commonly seen than 21 oh deficiency. 11beta oh deficiency can present with hi BP in about 2/3 of patients with the classical type, usually within the first years of life. The hypertension is the result of mineralocorticoid excess which can cause low potassium and metabolic alkalosis.