A Dose Finding Study for the Assessment of Delayed-type Hypersensitivity Reactions to SARS-CoV-2 Peptide Antigens in Uninfected Healthy Subjects, COVID-19 Convalescent Subjects, and COVID-19 Vaccinated Subjects.Recruitment Status : Recruiting First Posted : January 31, 2022 Last Update Posted : clinicaltrials.gov/ct2/sh…
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πŸ‘€︎ u/Juza77
πŸ“…︎ Jan 31 2022
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Covid Arm CDC recommendation: If you developed this hypersensitivity reaction with Moderna or Pfizer you should get your second shot and or booster in the opposite arm. Covid arm is more commonly seen with Moderna and observed in clinical trials but you can get it with Pfizer as well.
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πŸ“…︎ Oct 25 2021
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Visceral reaction to particular public figures: a hypersensitivity in itself?

I can name any number of politicians, past and present, whose policies were so repugnant to me that I found even the mention of their names highly upsetting; but there are also some whose presentation just grates on me, whether it’s their voice, their use of language, the cadence of their speech - to the point where I just have to turn them off when they appear in the media.

I just want to add that sometimes this reaction has no relationship to their correspondence with my own political positions: there are a few particularly vocal types on β€œmy side” whom I find so supremely annoying that I just want to tell them to shut up already.

There are also a number of performers who just make my skin crawl, often for no discernible reason. There are movies, TV shows, etc that I haven’t seen simply because they are in it - or, if I’m really interested in the writer, the story, the rest of the cast, etc I might watch it in spite of their part in it.

On the other hand, there are those in public life, whether in politics or art, that I will go out of my way to keep abreast of - or at the very least, be excited to encounter them in a news briefing or programme. Certain performers have to be in something pretty dire for me to not want to watch their performances, because I take so much pleasure in their talent.

I’m sure that everyone has intense likes or dislikes, but some of mine actually trigger a fight-or-flight response: I have to turn them off, or plug my ears, or just yell obscenities over what they’re saying (it helps to live alone). Even, like I said, if I happen to agree with some of what they’re saying.

Does anyone else have this experience? How do you work around it?

And if so, dare I ask - stirrer that I am - who is on your list?

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πŸ‘€︎ u/DevilsChurn
πŸ“…︎ Oct 10 2021
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Doubt - Type 4 Hypersensitivity reaction

Type 4 HSR can occur via 2 mechanisms - one involving CD8+ and the other involving CD4+ cells(inflammatory reaction). Do both of them require previous exposure of antigen?

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πŸ‘€︎ u/RJpop
πŸ“…︎ Sep 24 2021
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Pityriasis rosea-like eruption following COVID Vaccination of T-cell mediated control of latent infections, molecular mimicry with viral epitopes or a type IV delayed hypersensitivity reaction gab.com/deadInExile/posts…
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πŸ‘€︎ u/whosthetard
πŸ“…︎ Oct 04 2021
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does anybody else feel some kind of parkinson and hypersensitivity reactions?

i am 23 and i am shaking and feel like i got parkinson disease iam hypersensitive to heat and cold does anybody else experience this?!

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πŸ‘€︎ u/Left-Method-1373
πŸ“…︎ Aug 22 2021
🚨︎ report
Pityriasis rosea-like eruption following COVID Vaccination of T-cell mediated control of latent infections, molecular mimicry with viral epitopes or a type IV delayed hypersensitivity reaction gab.com/deadInExile/posts…
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πŸ‘€︎ u/whosthetard
πŸ“…︎ Oct 04 2021
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Adverse rare events to vaccines for COVID-19: From hypersensitivity reactions to thrombosis and thrombocytopenia

https://www.tandfonline.com/doi/full/10.1080/08830185.2021.1939696?s=09

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πŸ‘€︎ u/kal31dic
πŸ“…︎ Aug 23 2021
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Social anxiety could be an empathy imbalance: Taijin-kyofusho, a form of SAD characterized by a fear of causing others discomfort as a result of the sufferer’s behavioral reactions, is linked to hypersensitivity of the emotional states of others and an inability to identify emotional context. neurosciencenews.com/taij…
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πŸ‘€︎ u/jezebaal
πŸ“…︎ Feb 26 2020
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Delayed Hypersensitivity Reaction to Moderna COVID-19 Vaccine ID'd drugs.com/news/delayed-hy…
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πŸ‘€︎ u/anonymous-shad0w
πŸ“…︎ May 12 2021
🚨︎ report
Why is Granulomatosis with polyangiitis (wegeners) not considered a Type II hypersensitivity reaction?

From my understanding, wegener involves PR3-ANCA/c-ANCA, which are antibodies, and they trigger neutrophilic cell destruction/damage.

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πŸ‘€︎ u/Tigrehiperactivo
πŸ“…︎ Jan 29 2021
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Has anyone experienced an allergic reaction from an iron infusion? Specifically, a skin hypersensitivity in the form of hundreds of itchy bumps that slowly spread over your body?
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πŸ“…︎ Jan 12 2021
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During & post a random β€˜hypersensitivity reaction’ rash & simultaneous dyshidrotic eczema flare, my biting and picking has reached new levels. reddit.com/gallery/k3gdnm
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πŸ‘€︎ u/pigeonfart
πŸ“…︎ Nov 29 2020
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Social anxiety could be an empathy imbalance: Taijin-kyofusho, a form of SAD characterized by a fear of causing others discomfort as a result of the sufferer’s behavioral reactions, is linked to hypersensitivity of the emotional states of others and an inability to identify emotional context. neurosciencenews.com/taij…
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πŸ‘€︎ u/Lightfiend
πŸ“…︎ Feb 27 2020
🚨︎ report
IgE Independent Hypersensitivity Reaction

Hi,

B&B mentioned that there's IgE Dependent and IgE Independent Type I Hypersensitivity reactions. Can someone give an example of an IgE Independent Type I Hypersensitivity reaction? In my mind, even mast cell/basophil activation is via bound IgE receptors. Thank you.

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πŸ‘€︎ u/XiaoMeinBao
πŸ“…︎ Oct 09 2020
🚨︎ report
I Took Propecia for a week with no side effects, then had a night out, next day a headache, took propecia and later ibuprofen and had an allergic reaction, I have a hypersensitivity to aspirin but doctor has put me down as allergic to both? I want to continue taking propecia/fin. Any advice?
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πŸ‘€︎ u/JT663366
πŸ“…︎ Nov 22 2020
🚨︎ report
Delayed hypersensitivity reaction to infliximab?

Hey guys, I know you’re not doctors but I was wondering if any of you have had a delayed hypersensitivity reaction to infliximab?

I had my 6th or so infliximab infusion on Monday (today is Friday) and I’m wondering if I’m currently experiencing a delayed hypersensitivity reaction or if I’m overthinking it.

My symptoms are:

  • Aching pain in my legs
  • Slight raised rash on arms (kind of a light pink colour, I don’t think it’s meningococcal)
  • Dry mouth
  • Slight headache (could be dehydration)

If anyone has experienced something similar, did you take antihistamines? Did you go to the ER?

I’ve had a hypersensitivity reaction before (to azathioprine) and they weren’t very helpful in the hospital, just told me to stop taking the meds after being unable to figure out what else was wrong with me lol. The symptoms were similar, but I also had a fever and chills.

My other ideas are just a standard allergic reaction (I have no known allergies except azathioprine, so maybe a new allergy? Maybe from a type of hand san or cleaning product I haven’t used before?) or some kind of anxiety or stress thing.

Any experiences or advice is helpful. Thanks in advance :)

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πŸ‘€︎ u/whitegirl777
πŸ“…︎ Jul 24 2020
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What do you mean you don't have the resources to label food? I have Esophageal Hypersensitivity and have had numerous bad reactions to the food because I can't tell if I can eat it without anything bad happening. np.reddit.com/r/legaladvi…
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πŸ‘€︎ u/Vlad_Yemerashev
πŸ“…︎ Jan 30 2018
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Severe hypersensitivity infusion reaction to Keytruda (Pembrolizumab)

Hello,

My mother (69 years old) was diagnosed with stage 4 lung cancer (NSCLC) . She had severe pain on her torax. She tested negative for ALK, EFGR and ROS1 biomarkers but tested positive for PD-L1 so her doctor started her with Keytruda (Pembrolizumab) 2mg/kg every 3 weeks.

The first cycle went great, her torax pain disappeared completely after 2 weeks and her appetite increased so it was clearly working. However, during the second cycle, just after starting the infusion she experienced shortness of breath, red face and severe chills so she had to go the emergency room. The doctor said she had a severe hypersensitivity infusion reaction. He said we would like to try again by giving her antihistamines before the next infusion.

So one week later we tried again with the antihistamines. This time the full dosage went through almost completely. We thought everything was going to be ok, however just before finishing she developed the same reaction again.

Her doctor decided to stop keytruda and start treatment with chemotherapy instead using Carboplatin, Pemetrexed and Avastin (Bevacizumab).

According to everything that I have read she had pretty survival good chances with immunotherapy but not so much with chemotherapy.

Does anyone have any advice or experience with this type of reactions to immunotherapy? What makes me sadder is that the treatment was clearly working.

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πŸ‘€︎ u/d3bugger
πŸ“…︎ Feb 16 2020
🚨︎ report
Severe hypersensitivity infusion reaction to Keytruda (Pembrolizumab) /r/cancer/comments/f4wsae…
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πŸ‘€︎ u/d3bugger
πŸ“…︎ Feb 16 2020
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Type IV Hypersensitivity/Delayed T-cell Reaction

I was finally able to pinpoint exactly what I'm allergic to with my current allergist after 1.5 years of sinus congestion and countless different meds and allergy tests and doctors. I had a delayed reaction to intradermel testing where 2 new bumps showed up 24 hrs after injection. The reaction was also confirmed by a bloodtest. I am officially allergic to my cat and house dust! My allergist told me that only 10% of his patients exhibit that sort of delayed t-cell reaction, and that explains why I have had so little success with conventional drugs (I've tried montelukast, zafirlukast, allegra, zyrtec, claritin, all providing little relief). My question to my type IV people out there is, what do you do to manage your condition?

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πŸ‘€︎ u/cyfn
πŸ“…︎ May 01 2019
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[skin concerns] So, I have fairly okay skin but I suffer from severe sun reactions (I think I’m hypersensitive) The last 3 photos are what happens to my skin if I’m in direct sunlight for over 10 minutes - even wearing suncream. Can anyone give suggestions on strong suncreams for hypersensitivity?
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πŸ‘€︎ u/e5penc3r
πŸ“…︎ Jan 10 2020
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Autoimmune Gastritis is what kind of Hypersensitivity Reaction?

I have this Zanki card on autoimmune gastritis that I would like someone to clarify for me. This refers to AI Gastritis as a T4 HSR which is T-cell mediated. Through our didactics we only talked about AI gastritis as a form of chronic gastritis that involves anti-IF or anti-parietal cell antibodies.

If AI Gastritis is a T4 HSR, how are the anti-IF and anti-parietal cell antibodies formed as a result of mucosal damage.

Thank you for your help!

https://preview.redd.it/5eo2ygqj9v141.png?width=1896&format=png&auto=webp&s=9846e204c728fcf2bcdc5ca6eae07d428c6f2b33

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πŸ‘€︎ u/13thcranialnerve
πŸ“…︎ Nov 30 2019
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Type 2 hypersensitivity reaction youtube.com/watch?v=M7set…
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πŸ‘€︎ u/ProfSabin
πŸ“…︎ Jun 13 2020
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Severe hypersensitivity infusion reaction to Keytruda (Pembrolizumab) /r/cancer/comments/f4wsae…
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πŸ‘€︎ u/d3bugger
πŸ“…︎ Feb 16 2020
🚨︎ report
Don't know if anyone has mentioned it but I am convinced the cat was the reason his eczema cleared. Controlled exposure to allergens can cure them and I'm pretty sure they're both type 1 hypersensitivity reactions.
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πŸ‘€︎ u/thabokruger
πŸ“…︎ Sep 07 2016
🚨︎ report
[Article] New phenotypes in hypersensitivity reactions to nonsteroidal anti-inflammatory drugs. Lee Y, et al. Curr Opin Allergy Clin Immunol. 2019.

Link on Pubmed Authors Lee Y1, Shin YS, Park HS. Author information 1 Department of Allergy and Clinical Immunology, Ajou University School of Medicine, Suwon, Korea. Citation Curr Opin Allergy Clin Immunol. 2019 Aug;19(4):302-307. doi: 10.1097/ACI.0000000000000541.

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πŸ‘€︎ u/fistfulofglitter
πŸ“…︎ Sep 03 2019
🚨︎ report
Hypersensitivity reaction - Arthus

So, I am somewhat confused on the difference between an actual immune reaction and hypersensitivity reactions. I understand hypersensitivity reactions are exaggerated response. I got a question on Kaplan talking about how a toxoid vaccine can result in Arthus reaction (type 3). So, is that what happens in an actual immune response when we get exposed to tetanus?

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πŸ‘€︎ u/coolcatstudies
πŸ“…︎ Mar 23 2019
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Type 3 Hypersensitivity reaction - Immune Complex Mediated youtu.be/9GnaPmx49PY
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πŸ‘€︎ u/Pathology101
πŸ“…︎ Apr 02 2018
🚨︎ report
Type 4 hypersensitivity reaction- T cell mediated youtu.be/dX5U8ozJbaI
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πŸ‘€︎ u/Pathology101
πŸ“…︎ Apr 10 2018
🚨︎ report
Hypersensitivity reaction to chemo?

My mother has been taking chemo for the past 14 months now for her now fourth stage pancreatic cancer. This January we started with GEMOX, and things were going fine until in her sixth session in the end of March, she had a hypersensitivity reaction to Oxaliplatin, just minutes after it started.

This included severe pain in the stomach - she says it's more than she's ever experienced, sweating, body feeling hot, feeling light headed. The docs immediately paused it, gave her a couple of painkillers, and resumed the chemo after an hour. It went smoothly after that.

Yesterday she started with her second GEMOX cycle, and had the same reaction to Oxaliplatin, with the same actions following, and it again ended smoothly.

Now even the doctor is evaluating whether we should continue with this medicine, or try something else.

The sad part is that she was responding very well to GEMOX.

Between Dec and April, her PET scans showed that a new lesion that was spotted in the lymph nodes had almost disappeared, and the one in the Pancreas had significantly reduced in size.

Has anybody experienced such hypersensitivity reactions before? How did you and your medical team deal with it?

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πŸ‘€︎ u/i_often_say_that
πŸ“…︎ May 01 2019
🚨︎ report

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