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Doctor insights on: How Long After Eating Shellfish Can You Get Hives

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Hives from head to toe an hour after eating shellfish for the first time. No swelling or breathing difficulty but extremely itchy and uncomfortable...

Hives from head to toe an hour after eating shellfish for the first time. No swelling or breathing difficulty but extremely itchy and uncomfortable...

Likely allergic!: I highly recommend taking Benadry, two tablets, to help reduce the itching and discomfort. If you develop any facial/mouth swelling or difficulty breathing, then you have to call 911 for help. Benadryl (diphenhydramine) takes roughly 30 minutes to work. Then you need to see an allergist for testing to determine your specific food allergies. Hope this helps. ...Read more

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Dr. Andrew Seibert
3 doctors shared insights

Hives (Definition)

Also known as urticaria, hives are an outbreak of red bumps or wheals that appear quickly after exposure to certain allergens (foods, medications, other substances). Hives vary in size, are itchy, can burn, and can last for up to ...Read more


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Is it possible to have hives 8 hours after eating seafood?

Is it possible to have hives 8 hours after eating seafood?

unlikely: An allergic reaction to food in general usually occurs within 2 hours after eating. Some people allergic to red meat may not develop symptoms until 4 to 6 hrs later. ...Read more

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Why do I get lots of hives after eating shrimp?

Why do I get lots of hives after eating shrimp?

Likely Allergic: If you repeatedly develop hives after eating shrimp then you are most likely allergic to them. You not eat shrimp if they cause you to have hives. ...Read more

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How long does it take for an allergic reaction like hives to show up after eating something?

How long does it take for an allergic reaction like hives to show up after eating something?

Not very long: With food allergies hives either alone or as the first symptom of a more serious life-endangering condition called anaphylaxis typically appear within 5 minutes to 2 hours after the first bite. When appearing in a few minutes hives usually appear around the lips, eyes, face & neck. When 1st appearing after 2 hours hives can appear anywhere. Hives may be delayed as long as 8-12 hours after eating. ...Read more

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Why does my face get hives after eating a certain food but other times my face will be fine when eating the same food?

Why does my face get hives after eating a certain food but other times my face will be fine when eating the same food?

No food allergy: You probably are not truly allergic to the food and it is just a coincidence. Perhaps the food in question is an innocent bystander and another food is the culprit or there is another reason that you have hives and that reason is not related to food whatsoever. We eat 4 - 6 times a day and hives may seem break out after a food by coincidence. ...Read more

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If you get hives after eating fish at a restaurant, how do you know which fish (various fish are cooked using the same pots and pans)?

If you get hives after eating fish at a restaurant, how do you know which fish (various fish are cooked using the same pots and pans)?

See an allergist: An allergist can assist you in discovering if you are allergic to one fish, some fish, or all fish. Unfortunately, it's rarely just one fish. You also have to consider a reaction to shellfish either crustaceans or mollusks. The websites of the american academy of allergy & immunology (www.Aaaai.Org) the american college of allergy & immunology (www.Acaai.Org) have find an allergist tools. ...Read more

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Do I have a coconut and shellfish allergy if I broke out with hives eating coconut shrimp?

Do I have a coconut and shellfish allergy if I broke out with hives eating coconut shrimp?

Need evaluation: You need to see a board certified allergist as soon as possible for further evaluation. Some simple tests can be done in the office to help determine if you are allergic to coconut or shrimp or both. In the meantime do not eat either. ...Read more

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What are the causes of cold urticaria? My 5yr old gets hives after eating cold foods. Severe hives the 1st time, but less hives each additional time.

Cold urticaria: There is no known cause of cold urticaria although there is a familial type. It is advisable to take an antihistamine before eating cold foods. I would recommend loratadine 2 tsp once daily to avoid this reaction on a regular basis. ...Read more

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I break out in pin point hives ...stingy and itchy on my face esp. Forehead after eating sugar or choc.why?lotion or meds to help the hives..ideas

I break out in pin point hives ...stingy and itchy on my face esp. Forehead after eating sugar or choc.why?lotion or meds to help the hives..ideas

Cholinergic urticar: The size of these hives suggests cholinergic urticaria. This type of hive usually occurs with heat, exercise. You should ask your physicians to have you see an allergist and/or dermatologist to confirm the diagnosis. ...Read more

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9 month old got hives around mouth after eating lentil beans. They went away after we wiped his face off. What else is in same food family to avoid?

9 month old got hives around mouth after eating lentil beans. They went away after we wiped his face off. What else is in same food family to avoid?

Lentils are in the: Legume family, which includes chick-peas, peas, peanuts, beans, & soy. Lentil allergy is #4 among spanish children & #5 among those from india. Peanut allergy more common in the us. Several sites noted that lentils must be boiled at least 15 minutes to destroy harmful toxins in their skins. Others noted white beans, green beans, & soy generally well tolerated by those allergic to other legumes. ...Read more

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