Signs and symptoms of pheochromocytomas often include: 
High blood pressure
Headache
Heavy sweating
Rapid heartbeat
Tremors
Pallor
Shortness of breath
Panic attack-type symptoms
 Less common signs or symptoms may include: 
Anxiety or sense of doom
Blurry vision
Constipation
Weight loss
 Symptomatic spells The symptoms of pheochromocytoma may be constant, or they may occur, or get stronger, occasionally. These spells can happen because of activities or conditions, foods high in a substance that affects blood pressure (tyramine), and medications. Certain activities or conditions can make symptoms worse, such as: Certain activities or conditions 
Physical hard work
Anxiety or stress
Changes in body position, such as going from sitting or lying down to standing
Labor and delivery
Surgery and a drug that causes you to be in a sleep-like state during surgery (anesthesia)
 Foods high in tyramine, a substance that affects blood pressure, also can make symptoms worse. Tyramine is common in foods that are fermented, aged, pickled, cured, overripe or spoiled. These foods include: Foods high in tyramine, 
Some cheeses
Some beers and wines
Chocolate
Dried or smoked meats
 Certain medications that can make symptoms worse include: Certain medications 
Monoamine oxidase inhibitors (MAOIs), such as phenelzine (Nardil), tranylcypromine (Parnate) and isocarboxazid (Marplan)
Stimulants, such as amphetamines or cocaine
  When to see a doctor Although high blood pressure is a primary sign of a pheochromocytoma, most people who have high blood pressure don't have an adrenal tumor. Talk to your health care provider if any of these factors apply to you: 
Difficulty controlling high blood pressure with current treatment
Spells of worsening high blood pressure
A family history of pheochromocytoma
A family history of a related genetic disorder: multiple endocrine neoplasia, type 2 (MEN 2), von Hippel-Lindau disease, hereditary paraganglioma syndromes or neurofibromatosis 1
