cold sensitivity

{{Short description|Unusual discomfort when in a cool environment}}

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|symptoms = weakness, feeling extremely cold, cold hands and feet, shakiness

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|differential = hypothyroidism, anemia, fibromyalgia or vasoconstriction

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Cold sensitivity or cold intolerance is unusual discomfort felt by some people when in a cool environment.{{Cite web|title=Cold intolerance: MedlinePlus Medical Encyclopedia|url=https://medlineplus.gov/ency/article/003095.htm|access-date=2022-01-06|website=medlineplus.gov|language=en|archive-date=2021-09-01|archive-url=https://web.archive.org/web/20210901123954/https://medlineplus.gov/ency/article/003095.htm|url-status=live}}

Cold sensitivity may be a symptom of hypothyroidism, anemia, low body weight, iron deficiency, vitamin B₁₂ deficiency, fevers, fibromyalgia or vasoconstriction.{{Cite web|last=Crain|first=Esther|date=November 22, 2021|first2=Grace|last2=Wade|title=Why Am I Always Cold? 10 Reasons Why You Can't Stop Shivering|url=https://www.health.com/mind-body/why-am-i-always-cold|access-date=2022-01-06|website=Health.com|language=en|archive-date=2022-01-05|archive-url=https://web.archive.org/web/20220105020037/https://www.health.com/mind-body/why-am-i-always-cold|url-status=live}} There may also be differences in people in the expression of uncoupling proteins, thus affecting their amount of thermogenesis. Psychology may also play a factor in perceived temperature.[https://www.newscientist.com/channel/being-human/mg19926755.500-an-icy-stare-really-does-make-people-feel-cold.html "An icy stare really does make people feel cold"] {{Webarchive|url=https://web.archive.org/web/20080928124841/http://www.newscientist.com/channel/being-human/mg19926755.500-an-icy-stare-really-does-make-people-feel-cold.html|date=2008-09-28 }}, New Scientist, 27 Sept. 2008, p. 17.

Possible causes include Non-freezing cold injury.{{cite journal |title=Chronic non-freezing cold injury results in neuropathic pain due to a sensory neuropathy |first1=Tom A |last1=Vale |first2=Mkael |last2=Symmonds |first3=Michael |last3=Polydefkis |first4=Kelly |last4=Byrnes |first5=Andrew S C |last5=Rice |first6=Andreas C |last6=Themistocleous |first7=David L H |last7=Bennett |journal=Brain |volume=140 |issue=10 |date=October 2017 |pages=2557–2569 |doi=10.1093/brain/awx215 |pmid=28969380 |pmc=5841153 }}