Table 1.

Various clinical conditions can present in a similar way to pseudopheochromocytoma

Endocrine	Hyperthyroidism, carcinoid, mastocytosis, hypoglycemia, insulinoma, menopausal syndrome, adrenal medullary hyperplasia, reninoma
Pharmacologic	Tricyclic antidepressants, monoamine oxidase inhibitors, cocaine, alcohol withdrawal, abrupt clonidine withdrawal
Cardiovascular	Ischemic heart disease, arrhythmias, baroreflex failure, renovascular disease, postural orthostatic tachycardia syndrome
Neurologic	Migraine headache, cluster headache, stroke, diencephalic autonomic epilepsy, meningioma
Other	Preeclampsia or eclampsia, obstructive sleep apnea, anxiety or panic attacks, acute intermittent porphyria, recurrent idiopathic anaphylaxis