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Dr. Scott Sicherer

Are Allergic Reactions Without Hives Unusual?

By Dr. Scott Sicherer

Q: I’d been led to understand that you had to have hives to have an allergic reaction, but my daughter, who’s 14, has come through an anaphylactic reaction to nuts (she ate a food product that turned out to contain cashews). She was nauseated, wheezing and the ER said her blood pressure dropped low. But not …

Dr. Scott Sicherer

What causes hives to appear in a food-allergic reaction?

By Dr. Scott Sicherer

Q: Why do we get hives in a food-allergic reaction? And will they always appear?  Dr. Sicherer: Hives, also called urticaria, develop when allergy cells in the skin release chemicals, including histamine, that cause localized swelling, redness and itching. The response looks like a series of mosquito bites, often across an expanse of skin, but various …

Dr. Scott Sicherer

Can Someone With a Nut Allergy React to Mangoes or Peppercorns?

By Dr. Scott Sicherer

Q: Testing has confirmed that our 4-year-old is allergic to cashews and pistachios. (We visited an allergist after our daughter’s reaction to one cashew, in which her eye and lips became swollen and she got hives.) I’m unclear about what other foods she’ll need to avoid. While those are the only nuts she tested allergic …

Dr. Scott Sicherer

How Long Until Someone Starts to Feel Better After Food Allergy Anaphylaxis?

By Dr. Scott Sicherer

Q: I’m severely allergic to tree nuts and eggs and recently had a frightening anaphylactic reaction in which I had trouble breathing and became covered in hives. I used my auto-injector, had a second dose in the ambulance and required a third dose at the hospital.  My question: how long does it take for someone’s …

Dr. Scott Sicherer

Can Fussiness in a Child be a Sign of Allergic Reaction?

By Dr. Scott Sicherer

Q: Recently my mother was babysitting my son, who is 3 years old and peanut-allergic. She called me distressed; she had given my son a cookie she’d baked and he’d broken out in some hives on his face and began rubbing his nose. But what really made her think something was wrong was that he was suddenly very fussy, cranky …

Dr. Wade Watson

Can Exercise Trigger a Food-Allergy Reaction?

By Dr. Wade Watson

Q: My son recently passed a baked milk challenge at his allergist’s office. I regularly feed him small pieces of caked baked with milk. He usually tolerates it, but on two occasions, he broke out in hives, developed swollen lips and felt tightness in his chest. Interestingly, on both occasions, he played sports about an hour after eating the …

Dr. Hemant Sharma

How Do I Know Exactly When to Use the Auto-Injector?

By Dr. Hemant Sharma

Q: My 5-year-old is newly diagnosed with anaphylaxis to soy and peanut. I’m a little nervous about when to use the auto-injector. If a reaction occurs, how do I know if the symptoms are serious enough to use it? e.g. would he need to be wheezing?  Dr. Sharma: Dealing with a new diagnosis of a food …

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