Rapid Heartbeat
Another common symptom of pheochromocytoma is a rapid heartbeat, medically known as tachycardia. It is formally defined as having more than 100 heartbeats per minute. The main cause is the over-production of adrenaline, which causes the heart to beat faster. While it is usual to experience higher heart rates during stressful situations or exercise, this symptom can happen even when you are at rest or relax. As a result, many daily tasks can be affected and other health issues can also occur. Inform your doctor as soon as possible to prevent further complications.[4]
