A pheochromocytoma is a tumor (usually benign) usually located in the adrenal glands that makes too much adrenaline like substances.
This causes high blood pressure. Classically, it presents as episodes of headache, pallor and palpitations. It can also cause chest pain. The blood pressure is difficult to control and can be made worse by beta-blockers like toprol (metoprolol) and inderal.
Would you like to video or text chat with me?