Baroreflex failure needs to be distinguished from a number of other conditions that can have similar clinical findings.
Endocrine disorders:
(1) pheochromocytoma
(2) pseudopheochromocytoma
(3) carcinoid tumor
(4) hyperthyroidism
Cardiovasular disorders:
(1) paroxysmal tachycardia
(2) orthostatic intolerance
(3) autonomic failure
(4) renovascular hypertension
(5) Page's syndrome
Neuropsychiatric disorders:
(1) anxiety disorders (panic attacks, other)
(2) cerebral vasculitis
(3) intracranial lesion
(4) migraine
(5) syncope
Drug-related:
(1) medication effect
(2) drug abuse (amphetamines, cocaine)
(3) withdrawal reaction (alcohol, other)
Other:
(1) mast cell activation syndrome
(2) Munchhausen syndrome
