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What are the symptoms of a pheochromocytoma?

Someone with a pheochromocytoma usually has three classic symptoms -- headache, sweating, and heart palpitations (a fast heart beat) in association with markedly elevated blood pressure (hypertension). Other conditions that may accompany these classic symptoms are as follows: anxiety, nausea, tremors, weakness, abdominal pain, and weight loss.

Some people, however, never develop symptoms of a pheochromocytoma. Up to 10% of cases are discovered incidentally, meaning that they are not suspected and only found when the patient is undergoing diagnostic studies for other conditions. In some cases, the high blood pressure comes and goes and may be difficult to document. In other cases, the blood pressure is consistently elevated and easily recorded.

Pheochromocytomas are present in only about 0.2% of all people with high blood pressure. There are certain conditions, however, in which the diagnosis of pheochromocytoma may rank high on the list of possibilities; they are discussed below.

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