Pheochromocytoma typically refers to tumors that originate from chromaffin tissue of the neural crest, and more often the tumors arise from sympathetic or parasympathetic ganglia, primarily secreting catecholamines. Many patients, due to long-term secretion of catecholamines, experience significant hypertension; severe cases may lead to hypertensive crises and cause serious damage to the heart, brain, and kidneys, or even life-threatening conditions due to severe hypertension. In most cases, if diagnosed and treated early, satisfactory treatment results can often be achieved. Those with pheochromocytoma should visit local hospitals in a timely manner for early diagnosis and treatment.