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Anaphylaxis
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{{stub}} '''Anaphylactic shock''' or '''anaphylaxis''' is a typically severe, and sometimes fatal, ''systemic reaction'' in a susceptible person exposed to a particular antigen after previous sensitization.<ref name="NHS">{{Cite web | url = https://www.nhs.uk/conditions/anaphylaxis/ | title = Anaphylaxis | last = | first = | author-link = | date = 2017-10-20 | website = [[National Health Service]]|language=en | access-date = 2021-02-18}}</ref><ref name="dictionary">{{Cite web | url = https://www.merriam-webster.com/dictionary/anaphylactic+shock | title = Definition of ANAPHYLACTIC SHOCK | website = Merriam-Webster Dictionary|language=en | access-date = 2021-02-18}}</ref> ==Signs and symptoms == Anaphylactic shock typically causes: * [[Breathing problems in ME/CFS|breathing problems]] * [[fainting]] or loss of consciousness * [[Tachycardia|fast heartbeat]] * [[Skin itch|itching]] * [[Urticaria|hives]] * [[skin rash]] * swelling / [[inflammation]], typically involving airways * [[weak pulse]]<ref name="NHS" /><ref>{{Cite web | url = https://www.mayoclinic.org/diseases-conditions/anaphylaxis/symptoms-causes/syc-20351468 | title = Anaphylaxis - Symptoms and causes | website = Mayo Clinic|language=en | access-date = 2021-12-24}}</ref> ==Prevalence== ==Symptom recognition== ==Treatment == ==Notable studies== ==See also == *[[Allergy]] *[[Histamine]] *[[New allergies and intolerances]] in ME/CFS and long COVID *[[Epinephrine]] *[[Immunological hypersensitivity]] *[[Mast cell activation syndrome]] ==Learn more == *[https://www.nhs.uk/conditions/anaphylaxis/ Anaphylaxis] - NHS *[https://www.immunology.org/public-information/bitesized-immunology/immune-dysfunction/anaphylaxis Anaphylaxis] - British Society for Immunology ==References == {{Reflist}} [[Category:Allergy signs and symptoms]] [[Category:Immunology]] [[Category:Immune signs and symptoms]] [[Category:Sensitivity signs and symptoms]] [[Category:Signs and symptoms]]
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