Early symptoms of pheochromocytoma include changes in blood pressure, headache, and pallor. Pheochromocytoma is a tumor that originates from chromophilic tissue and is capable of releasing large amounts of catecholamines either persistently or paroxysmally. Early symptoms of pheochromocytoma include blood pressure changes, which manifests as paroxysmal or persistent hypertension. In paroxysmal hypertension, the blood pressure will rise suddenly, and persistent hypertension can have the manifestations of hypertension, such as headache, nervousness, and so on. In addition, early symptoms of pheochromocytoma can also have pale face, headache and other symptoms, which is caused by the tumor releasing a large number of catecholamines leading to vasoconstriction. Patients with similar early symptoms of pheochromocytoma are recommended to go to the hospital and do not take medication on their own.