POTS is a disorder that can easily be overlooked or misdiagnosed. Some patients have had to wait years before their condition was properly labeled. POTS is sometimes misdiagnosed because of the wide array of symptoms that accompany this syndrome. The symptoms of postural orthostatic tachycardia often mimic other illnesses. Entities such as thyroid disease, pheochromocytoma, hypoadrenalism, cardiac disease, autonomic neuropathies, medication side effects and anxiety disorders need to be ruled out