Hypersensitivity Type I reaction (Immediate or allergic reaction) - pathophysiology

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"Hypersensitivity reactions are exaggerated or inappropriate immune response to benign antigens. It is the immune response and not the antigen that is harmful. An external antigen such as a drug, pollen or food can elicit an inappropriate immune response.
Hypersensitivity Type I is a antibody mediated reaction. It is also called the immediate hypersensitivity reaction because it is fast. An allergic reaction is a type I hypersensitivity reaction and really involves recognition of an antigen by primed IgE immunoglobulins on mast cells."
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[@fjo8066]

During my study years in med school u were my best teacher, and now i am a doctor and i am preparing for my residency exam , everytime i forget something or found it hard i run to ur videos , thank u armando for
the 1000 times that u save me ❤️❤️❤️

[@solutionpharmacy]

Respected sir.
I am one of your big fan. When Inwas studens I have seen all of your videos related to HAP and Microbiology. Now Inbecome teacher but still I am your students. I have recommended my all students tongo through your channel. Being a creator i know how hard it is to make videos. Thank you so so much.

[@howtomedicate]

I always found this such a hard topic as a student! This video will help a lot of people 👍😁

[@faidaufaira]

this video is a major help for understanding a quite complicated topic! mad respect 🙌🏻

[@mjdy4577]

Literally had a lecture on this last week, this was great to consolidate my knowledge THANKS 😁

[@robmaldonado5489]

Great breakdown of the physiological process the body goes through within an allergic response. Thank you for the illustration and presentation. We’ll done sir.

[@kachouriii]

Ohh this new way of your videos is so better, old ones are so good too but they're like polluted with red color. I adore this

[@tamaradaka9393]

Thank you so much Sir....lots of love from Zambia🇿🇲

[@brtseif]

Starting to do the background studying/reading for my thesis that relates to allergic reactions, thanks for a great video! :)

[@selmader9986]

Your videos helped me so much in my studies, thank you for existing,

[@syedahnaqvi4903]

excellent videos!! you're the best teacher!!! thank you for sharing your knowledge so wonderfully!!!!

[@morphine_1mg]

Tqsm. 😘😘✌️✌️✌️for this video it helps a lot to understand the immunity concept

[@user-lg2tx7sk3p]

3:54 (bookmark, ignore)

[@charafgheskili5738]

Thank youu for evrything ❤️

[@howtomedicate]

Indeed!

[@muskanpundir9572]

Thanks this was very helpful and Can u make other types of hypersensitivity too?

[@iqrazulfiqarghouri7299]

Your videos are always the best stay blessed

[@babayhendrayani7728]

I like the way ur explaining, and i always wonder with ur talent in drawing

[@AndyG_MTB]

These videos are really excellent, thank you!

[@tafheemmakhdoomi]

Thank you for this. You're a life saver❤🙌

[@bogdan19992]

Thanks for the information presented.

[@poecilia1329]

Your video is really helpful!

[@user-lg2tx7sk3p]

Related Cells:
1) Antigen Presenting Cells (APC)
2) [T Lymphocytes] => T Helper 2 (Th2) Cells
3) B Cells - [IgE Plasma Cell]
4) Mast Cells & Basophils

[@Dr.NishaSyedh]

You are doing a great job sir
Thank you...

[@muhammadyahya110]

Thanks

[@رقيةميسرمحمد-ج7ط]

Amazing... thanks from Iraq 🇮🇶

[@chritoarxto6108]

Greetings to you all, I want to thank Doctor Alued for everything I am glad I went through the internet for this Allergy treatment .and other skin dieses And thank you so much for answering all my questions on time. thought I am in US. i am now free from my skin dieses

[@hanskellynogua7110]

Thankyou so much I learnt alot. 🙏💯👍

[@maram1maram]

thank u so much
keep up
I wait for you to make another vidéos about biological laboratory workup

[@uzmasindh9737]

your videos are amazing

[@prestonmoore9996]

I'm currently in the hospital for Anaphalactic Shock. I got bit by a tick that stays on mammals (4 legged animals) it hopped off and bite me injecting the venom inside of me. Now whenever I eat mammals my whole body gets hives all over them, my blood flow constricts to my heart, and I get a heart attack. This disease will eventually go away but for now I just can't eat mammal. I'm currently in the hospital bed typing this right now because I accidentally ate mammalian meat, I will be out tomorrow but I almost died this time because my heart stopped.

[@jahazielgarrido661]

Could you do one on the Endo-Cannabinoide sistem?

[@fahadkarim107]

You are a gemm, thankyouu so muchh ❤

[@Akbarali_Olimov]

Why is IgE specific to an antigen in Type I Hypersensivity reaction? If I'm not mistaken, the only two cells that can "see" or "touch" antigen are antigen representig, T and TH2 cells, while IgE is represented by B cells.

[@prajaktapatil6130]

Thank you so much

[@jesusdanielramirez]

Is there a cure or a way to reverse hipersensitivity? I have been developing reactions to all types of foods and vitamins. My immune system is very, or in this case, hypersensitive. Will appreciate your response, as I have a very short and current list of foods that I can eat. I believe I have type 1 hypersensitivity.

[@theclassroomdoc]

Thanks so much!!

[@amirabdullah9570]

Thanks for the information.......

[@CC-lq3ie]

Excellent ✌

[@heartkelvin9031]

Thanks.

[@anomaly444]

your website stopped working :/

[@humility1st]

Thank you.

[@aluda1417]

This is the best

[@neilbernard5615]

This video was great! By chance, are you from South Africa?

[@ritikabounthiyal6427]

Nops..he is from Australia..

[@amaasare5645]

I want to learn how to sketch. How do you do it so effortlessly

[@ahmadnn7056]

you are good but in this vid it is not the best, you missed the type 2 T helper cell for example and couple important points! step by step you will be the best ;)

[@niduresidue]

Thank you so much, this really helps me T^T

[@elitokihaste]

You are awesome!

[@margaretj.kwaiga3280]

Where can i get a copy of your flow chat diagrams? It's Very helpfull.

[@manlix1415]

THank you !!

[@molivers2024]

🙏 thank you

[@muhammadyahya110]

07:03 Mr. eosinophil's nucleus is just looking as Thyroid gland. Who agrees like....❤

[@ramana2166]

What about swartzmannn reaction ??? And u didn't mention about type 5 hypersensitivity...??

[@Trending_India_1]

Type 5 hypersensitivity discovered later.Not metioned by Gell and Coombs.They classified only upto type 4 hypersensitivity.And all we studied classification given by Gell And Coomb.

[@qamaralam7117]

Jazak ALLAH ❤️🌺

[@smart9924]

May I know what are the pens that you used here??

[@Trending_India_1]

Your way of explaining the video is quite good. It will be easier to understand if you include a good background sound.

[@emmafury786]

omg...i am addicted

[@Marathivlogs-r8x]

I am from India ❤

[@daisyweston8538]

What causes a reaction to become systemic rather than staying localised?

[@Trending_India_1]

Vasodialation and smooth muscle relax after the mast cell degranulation. When it is in excess tissue of the body, it is called systemic anaphylaxis.And in local anaphylaxis it is only upto specific tissues.

[@fatemehazhdari1105]

عالی بود عالی👌👌👌🌹🌹🌹🌹🌹

[@saranawzad7019]

🎉

[@floflyberlin7392]

👍☺

[@Hambxne]

[@ashutoshmishra6641]

Thanks