7 of the Strangest Allergies

When you think of allergies, the first thing that comes to mind is probably seasonal allergies, but there are a handful of strange allergies can be much harder to avoid than pollens.

Hosted by: Michael Aranda
———-
Support SciShow by becoming a patron on Patreon: https://www.patreon.com/scishow
———-
Dooblydoo thanks go to the following Patreon supporters: Lazarus G, Kelly Landrum Jones, Sam Lutfi, Kevin Knupp, Nicholas Smith, D.A. Noe, alexander wadsworth, سلطان الخليفي, Piya Shedden, KatieMarie Magnone, Scott Satovsky Jr, Charles Southerland, Bader AlGhamdi, James Harshaw, Patrick Merrithew, Patrick D. Ashmore, Candy, Tim Curwick, charles george, Saul, Mark Terrio-Cameron, Viraansh Bhanushali, Kevin Bealer, Philippe von Bergen, Chris Peters, Justin Lentz
———-
Looking for SciShow elsewhere on the internet?
Facebook: http://www.facebook.com/scishow
Twitter: http://www.twitter.com/scishow
Tumblr: http://scishow.tumblr.com
Instagram: http://instagram.com/thescishow
———-
Sources:
Sources:
https://www.researchgate.net/publication/276147913_Physical_urticaria_Review_on_classification_triggers_and_management_with_special_focus_on_prevalence_including_a_meta-analysis
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2492902/
http://www.pcds.org.uk/clinical-guidance/urticaria-physical-urticaria
http://www.merckmanuals.com/professional/dermatologic-disorders/approach-to-the-dermatologic-patient/urticaria
http://www.merckmanuals.com/professional/immunology-allergic-disorders/allergic,-autoimmune,-and-other-hypersensitivity-disorders/overview-of-allergic-and-atopic-disorders
https://emedicine.medscape.com/article/762917-overview
http://abcnews.go.com/Health/AllergiesNews/story?id=7401149&page=1
https://mosaicscience.com/story/why-do-we-have-allergies/

dermographism
https://www.dermnetnz.org/topics/dermographism/
https://emedicine.medscape.com/article/1050294-overview
https://www.ncbi.nlm.nih.gov/pubmed/16405609

vibration
https://ghr.nlm.nih.gov/condition/vibratory-urticaria#genes
https://www.nih.gov/news-events/news-releases/nih-scientists-discover-genetic-cause-rare-allergy-vibration

water
https://rarediseases.info.nih.gov/diseases/10901/aquagenic-urticaria
http://www.bbc.com/future/story/20160915-the-woman-who-is-allergic-to-water
https://www.sciencealert.com/here-s-what-happens-if-you-develop-an-allergy-to-water
http://onlinelibrary.wiley.com/doi/10.1111/j.1525-1470.2012.01801.x/abstract

exercise
https://emedicine.medscape.com/article/886641-overview#showall
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3020292/
https://www.aafp.org/afp/2001/1015/p1367.html

semen
https://clinicalmolecularallergy.biomedcentral.com/articles/10.1186/1476-7961-6-13
https://www.uptodate.com/contents/allergic-reactions-to-seminal-plasma
http://www.issm.info/sexual-health-qa/what-is-a-sperm-allergy/
http://www.tandfonline.com/doi/abs/10.3810/pgm.2011.01.2253
http://www.annallergy.org/article/S1081-1206(13)00005-7/abstract
http://www.allergologyinternational.com/article/S1323-8930(17)30110-7/fulltext
https://sciencealert.com/rare-post-orgasm-illness-is-real-and-warrants-further-research-study-finds-pois-semen
https://rarediseases.info.nih.gov/diseases/10809/postorgasmic-illness-syndrome
http://www.jsm.jsexmed.org/article/S1743-6095(15)33455-X/fulltext
https://www.nature.com/articles/nrurol.2011.17

progesterone
https://rarediseases.info.nih.gov/diseases/9139/autoimmune-progesterone-dermatitis
https://rarediseases.info.nih.gov/diseases/9139/autoimmune-progesterone-dermatitis/cases/33524
https://www.medscape.com/viewarticle/712365
http://www.annallergy.org/article/S1081-1206(10)61838-8/abstract
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3423662/
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC509283/
https://www.dermnetnz.org/topics/autoimmune-progesterone-dermatitis

Image Sources:
https://commons.wikimedia.org/wiki/File:Skin_writing01.jpg
https://upload.wikimedia.org/wikipedia/commons/a/a0/SMCpolyhydroxysmall.jpg
https://en.wikipedia.org/wiki/Histamine#/media/File:Histamine.svg
https://commons.wikimedia.org/wiki/File:PSA_KLK3_PDB_2ZCK.png
https://en.wikipedia.org/wiki/Progesterone#/media/File:Progesterone-3D-balls.png