Editing Palpitations (section)

===Psychiatric problems===
[[File:Epinephrine.svg|thumb|[[Adrenaline]], a natural hormone released during periods of emotional and physical stress, can cause palpitations as a result of its effects on the [[parasympathetic nervous system]].]]
Anxiety and stress elevate the body's level of [[cortisol]] and [[adrenaline]], which in turn can interfere with the normal functioning of the parasympathetic nervous system resulting in overstimulation of the vagus nerve. Vagus nerve induced palpitation is felt as a thud, a hollow fluttery sensation, or a skipped beat, depending on at what point during the heart's normal rhythm the vagus nerve fires. In many cases, the anxiety and panic of experiencing palpitations cause a patient to experience further anxiety and increased [[vagus nerve stimulation]]. The link between anxiety and palpitation may also explain why many panic attacks involve an impending sense of cardiac arrest. Similarly, physical and mental stress may contribute to the occurrence of palpitation, possibly due to the depletion of certain [[List of micronutrients|micronutrients]] involved in maintaining healthy psychological and physiological function.<ref>{{cite journal |pmid=10761188|year=2000|last1=Cernak|first1=I|title=Alterations in magnesium and oxidative status during chronic emotional stress|journal=Magnesium Research |volume=13|issue=1|pages=29–36|last2=Savic|first2=V|last3=Kotur|first3=J|last4=Prokic|first4=V|last5=Kuljic|first5=B|last6=Grbovic|first6=D|last7=Veljovic|first7=M}}</ref> Gastrointestinal bloating, indigestion and hiccups have also been associated with overstimulation of the vagus nerve causing palpitations, due to branches of the vagus nerve innervating the GI tract, diaphragm, and lungs.{{citation needed|date=February 2021}}

Many psychiatric conditions can result in palpitations including [[Major depressive disorder|depression]], [[generalized anxiety disorder]], [[panic attack]]s, and [[somatization]]. However one study noted that up to 67% of patients diagnosed with a mental health condition had an underlying [[arrhythmia]].<ref name="Robinson Sanchack 2019"/> There are many metabolic conditions that can result in palpitations including, [[hyperthyroidism]], [[hypoglycemia]], [[hypocalcemia]], [[hyperkalemia]], [[hypokalemia]], [[hypermagnesemia]], [[hypomagnesemia]], and [[pheochromocytoma]].<ref name="Robinson Sanchack 2019"/>