Doctor insights on:
How Long Do Allergies Usually Last
Allergies occur when your immune system is triggered by envirionmental factors it should ignore--for example, pollen in the air, or dander on a cat or dog--and creates cells to fight against them. An allergic reaction typically causes itching, congestion, or drainage, and ...Read more
Why do allergy shot injections last for only about 10 years? Is there anything else that lasts longer?
We do not know: Some patients get lifelong relief from allergy shots, while others never seem to be able to stop them. Most patients get a least 10 years of relief from 3-5 years of shots. ...Read more
Long, long time: Shrimp allergies tend to persist compared to other food allergies. Even when cooked, the major shrimp allergen is resistant to heat. Shrimp (and other shellfish) are more likely to cause severe allergic reactions like anaphylaxis. The major shrimp allergen called tropomyosin (in the meat/muscle) can cross react with house dust mite. The reaction has nothing to do with iodine. ...Read more
Seasonal allergy: As the terminology says, it would last until the season is over. I suppose what you refer to as seasonal allergy is seasonal allergic rhinoconjunctivitis or hay fever like diseases. You should check with your local allergist to see if it is the case and which seasons you are likely to be affected. ...Read more
24 hours or less: Claritin, and its generic form - Loratadine - generally lasts about 17 hours. Thus, taking it in the morning (which is safe to do as it is non-drowsy) should get you through the majority of the day. If it does not, talk to your doctor about adding a topical nasal steroid spray. ...Read more
Received a depomedrol shot today 80mg, in my bottom, for allergies & sinus issues. When will it kick in and how long will it last?
About 6 hrs: You should get some effects in about 6 hrs but the peak effect takes a day or two In general, I would advise against getting cortisone shots for a sinus infection especially for someone with anxiety & BP issues since nasal steroid likely works better with no serious side effects. If you have frequent sinusitis and allergies, best to consult an allergist. ...Read more
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