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Harvard Health Blog
Another option for life-threatening allergic reactions
- Author: Susan Farrell, MD,
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Geuss what I live in Georiga and am allergic to trees. I am also a boy scout and love being active and camping in the forest.
Since it raises blood pressure quickly, is this dangerous for someone who controls her blood pressure only with her strict DASH diet?
Have recently had episode of significant throat swelling (oropharnynx ) without rash , lips , tongue etc , at 3 am . Was given dexamethasone IV in ER which reduced swelling over some hours . Doctor there considered it viral ( no abnormal bloods ) Blood pressure raised . GP visit the following week said it had to be a severe allergic reaction , not viral and that I needed epi pen etc . Confused , concerned , and no idea what caused it . It was approx 10 hours after any food … Any thoughts would be so welcome , Could highly scented lilies cause such a severe reaction ?
Patricia , New Zealand
You can have a delayed allergic reaction up to a week per my allergist. Most ER docs don’t know this. I also had swelling due to a virus(cold) that I had within 4 weeks of the swelling in my face and throat. I’ve had to use the epi-pen for allergic reactions and I was grateful for it. Very easy to use and worked immediately. I carry one everywhere I go.
Which mechanism of the anaphylaxis does epinephrine alleviates? Heart rate, blood pressure, and ???? Does it help stop swelling of the airways? How?
Susan – Thanks for this article. Could you possibly follow up with Symjepi’s owner, Adamis Pharmaceuticals, to find out why it is taking so long to get Symjepi to market? Thanks
I wish they would get this product on the market! Besides the high price, autoinjectors have had two huge recalls in the past couple years. Imagine needing the shot and finding the device malfunctions when you try to use it. Symjepi has fewer moving parts to malfunction and will likely become the standard protection against anaphylactic reactions. Do you have any idea when it will be available?
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