Editing Orthostatic hypotension (section)

===Associated diseases===
The disorder may be associated with [[Addison's disease]], [[atherosclerosis]] (build-up of fatty deposits in the arteries), [[diabetes]], [[pheochromocytoma]], [[porphyria]],<ref name=pmid497968>{{cite journal | vauthors = Sim M, Hudon R | title = Acute intermittent porphyria associated with postural hypotension | journal = Canadian Medical Association Journal | volume = 121 | issue = 7 | pages = 845–846 | date = October 1979 | pmid = 497968 | pmc = 1704473 }}</ref> [[long COVID]],<ref>{{Cite journal |last=Lee |first=Cassie |last2=Greenwood |first2=Darren C. |last3=Master |first3=Harsha |last4=Balasundaram |first4=Kumaran |last5=Williams |first5=Paul |last6=Scott |first6=Janet T. |last7=Wood |first7=Conor |last8=Cooper |first8=Rowena |last9=Darbyshire |first9=Julie L. |last10=Gonzalez |first10=Ana Espinosa |last11=Davies |first11=Helen E. |last12=Osborne |first12=Thomas |last13=Corrado |first13=Joanna |last14=Iftekhar |first14=Nafi |last15=Rogers |first15=Natalie |date=1 March 2024 |title=Prevalence of orthostatic intolerance in long covid clinic patients and healthy volunteers: A multicenter study |url=https://onlinelibrary.wiley.com/doi/10.1002/jmv.29486 |journal=Journal of Medical Virology |language=en |volume=96 |issue=3 |doi=10.1002/jmv.29486 |issn=0146-6615}}</ref><ref>{{Cite journal |date=24 September 2024 |title=Is long COVID linked with orthostatic intolerance? |url=https://evidence.nihr.ac.uk/alert/is-long-covid-linked-with-orthostatic-intolerance/ |journal=NIHR Evidence}}</ref> and certain [[neurology|neurological]] disorders, including  [[autoimmune autonomic ganglionopathy]], [[multiple system atrophy]], and other forms of [[dysautonomia]].  It is also associated with [[Ehlers–Danlos syndrome]] and [[anorexia nervosa]]. It is also present in many patients with [[Parkinson's disease]] or [[Lewy body dementias]] resulting from sympathetic denervation of the heart or as a side effect of dopaminomimetic therapy. This rarely leads to [[Syncope (medicine)|fainting]] unless the person has developed true [[autonomic nervous system|autonomic]] failure or has an unrelated heart problem.{{citation needed|date=October 2016}}

Another disease, [[dopamine beta hydroxylase deficiency]], also thought to be underdiagnosed, causes loss of sympathetic noradrenergic function and is characterized by low or extremely low levels of norepinephrine, but an excess of dopamine.<ref>{{cite book | vauthors = Robertson D, Garland EM | chapter = Dopamine Beta-Hydroxylase Deficiency | date = September 2003 | pmid = 20301647 | chapter-url = https://www.ncbi.nlm.nih.gov/books/NBK1474/ | publisher = University of Washington, Seattle | veditors =  Adam MP, Ardinger HH, Pagon RA, Wallace SE, Bean LJ, Stephens K, Amemiya A | title = GeneReviews | via = NCBI Bookshelf }}</ref>

Quadriplegics and paraplegics also might experience these symptoms due to multiple systems' inability to maintain normal blood pressure and blood flow to the upper part of the body.{{citation needed|date=October 2016}}