Bouloux and Fakeeh listed conditions which may have clinical findings which need to be distinguished from those of pheochromocytoma. Some are associated with increased serum epinephrine (see previous section).
Hormonal:
(1) pseudopheochromocytoma (hyperadrenergic hypertension)
(2) thyrotoxicosis
(3) flushing and other menopausal symptoms
(4) carcinoid tumor
(5) autoantibodies to the beta adrenergic receptor
Neuropsychiatric:
(1) anxiety or hyperventilation
(2) subarachnoid hemorrhage
(3) Guillain-Barre syndrome
(4) autonomic attacks (crisis) in tabes dorsalis
Metabolic:
(1) acute intermittent porphyria
(2) hypoglycemia
Toxic:
(1) alcohol withdrawal
(2) tyramine administration to a patient taking an MAO inhibitor
(3) excessive caffeine
(4) mercury or lead poisoning
(5) abrupt discontinuation of clonidine
(6) stimulant (cocaine, amphetamine) intoxication
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Purpose: To identify clinical conditions that may mimic a pheochromocytoma.
Specialty: Endocrinology, Clinical Laboratory, Hematology Oncology
Objective: differential diagnosis and mimics, red flags
ICD-10: D35.0, C74.1,
