What are the actual symptoms of pheochromocytoma?  

Varies. The following are commonly seen with pheo: sustained or periodic elevation of BP in 85% headache in 90% generalized sweating 60% most patients do not have all three and there is a general trend to finding these tumors earlier and smaller therefore less symptomatic than the the pheos of yesteryear.
Infection of breast. Localized infection of breast most common with breast feeding.
Blood pressure. High blood pressure (which may be episodic) is usually present. Other common symptoms are headache, a feeling of pounding from the blood pressure, palpitations, anxiety, etc. These are all common symptoms - pheochromocytomas occur in less than 1 in 1000 people.