Doctor insights on:
Possibly: Anaphylaxis is a life threatening allergy reaction that occurs within minutes to hours of being exposed to the allergen in question. Very rarely one can see anaphylaxis that is delayed and not occur for a couple of hours after exposure. More commonly one sees anaphylaxis that occurs immediately then the symptoms recur hours later -- this is called a biphasic response. ...Read moreSee 1 more doctor answer
Wasp sting yesterday upper R arm, area very red/swollen/itchy today (3in diam), some wheezing, SOB, dizziness this AM - delayed anaphylaxis?
Rare but possible: It is exceedingly rare, but not unheard of, to have delayed anaphylaxis to a sting, and the mechanism, of course, is unexplainable (theoretically, perhaps, T-cell mediated anaphylaxis to peptide components). Regardless, you should be seen urgently for a proper assessment of your airway, and treatment as indicated. A referral to allergist should be the next step. ...Read more
If you have anaphylaxis do you have hives all over your body? Also how quickly does anaphylaxis happen from a food allergy? What if it is delayed?
Anaphylaxis: You can still have it without hives allover,although generalized hives can be part of anaphylaxis but not necessary,anaphylaxis means acclerated allergic reaction affecting vital system and other body organs,the skin is one of them.Allergic food reactions most of the time are within minutes,rarely hours,beyond that reactions aren't of the anaphylaxis magnitude.Avoid triggers,keep epinephrine handy ...Read more
What's the best way to stop a food allergy (immediate or delayed, but not anaphylactic shock) reaction?
Benadryl (diphenhydramine): If a reaction such as itching happens to a food- an antihistamine like Benadryl (diphenhydramine) may help. However, be careful with food allergies because they can worsen each time you eat that particular food. Therefore the first time you may feel just mild itching and swelling but the next time it could be a full anaphylactic reaction. The safest thing to do is to avoid the food until you get allergy tested. ...Read moreSee 2 more doctor answers
How long does it take for food allergies to develop? If you have delayed allergic reactions, is it possible to eventually become anaphylactic?
Food allergy: A person, due to the right timing of exposure in the predisposed, can develop food allergies at any time in her/his life to any food. However most food allergies are due to the common highly allergenic foods, such as nuts seafood milk eggs soy ; wheat. It is unknown if delayed reactions can become anaphylactic; however if there is evidence of an ige reaction to a food, caution is the best remedy. ...Read more
Medical emergency: Anaphylaxis (or an anaphylactic reaction) is a medical emergency due to a severe allergic reaction. Symptoms include shortness of breath, stridorous breathing, cyanosis, cough, etc. This is a medical emergency that requires immediate treatment and/or a 9-1-1 call. ...Read moreSee 2 more doctor answers
Allergic reaction: Anaphylaxis is a severe allergic reaction. Common symptoms are difficulty breathing, difficulty swallowing, a rash, skin redness, swelling, shortness of breath, coughing, and several others. It involves the entire body and needs to be treated right away as it can be life threatening. ...Read moreSee 2 more doctor answers
Symptoms can vary: Anaphylaxis is a systemic allergic reaction. That is, symptoms occur not just at the site of exposure, but at other parts of the body as well. Symptoms include widespread hives, flushing, vomiting, diarrhea, wheezing, swelling, and even a dangerous drop in blood pressure (shock). Anaphylaxis is an emergency, so seek immediate medical attention if you feel someone has these symptoms. ...Read more
Call 911 : Anaphylaxis is a medical emergency and needs to be treated immediately. The most effective medication is Epinephrine or Adrenalin and the sooner it is administered, the better the outcome. Avoiding the triggering allergen is important. Because anaphylaxis can progress and potentially be fatal, it is important to be evaluated in the ed so appropriate treatment can be administered. ...Read more