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Among others, the following conditions
can present similar symptoms. Pheochomocytomas might be misdiagnosed as any
of these conditions. Conversely, these conditions can erroneously be thought to be pheochromocytoma:
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Vasodilating headaches, ophthalmic migraines
and cluster headaches
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Anxiety, psychoneurosis,
psychosis
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Lesions of the nervous system: trauma,
tumor, stroke, focal arterial insufficiency, autonomic hyperreflexia,
diencephalic seizure and syndrome
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Dysfunctions of the central and peripheral
nervous system: cardiogenic hypertensive reflex in angina pectoris; exaggerated
response to hypovolemia or infection, paroxysmal tachycardia, familial
dysautonomia.
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Possible drug abuse: amphetamines, cocaine,
LSD, phenylpropanolamine, caffeine
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Known drug effects: interaction of monoamine
oxidase inhibitors with certain food (cheeses) and beverages (beer, wine),
clonidine withdrawal symptoms, atropine administration, nasal decongestants,
tricyclic antidepressants
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