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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

Dr. Tiffanie Noonan
3 Doctors shared insights

Hives (Definition)

An outbreak of red bumps or wheals that appear quickly after exposure to certain allergens (foods, medications, other substances). They can 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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Severe hives all over & congestion 2 hrs after eating ham, no prev allergy, no fevr benadryl (diphenhydramine) but Sx returned, ER gave corticosteriod...food or viral?

Severe hives all over & congestion 2 hrs after eating ham, no prev allergy, no fevr benadryl (diphenhydramine) but Sx returned, ER gave corticosteriod...food or viral?

Could be either: Severe hives and congestion after eating ham...could be due to food, but you describe it occurring 2 hours after eating, which is a bit late for a food related allergic reaction. Are you sick currently? Hives and congestion could certainly be related to a viral infection as well. ...Read more

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I've been getting hives (1-3 small bumps) in a same spot on my tummy right after eating breakfast, a few x a week. Weird! Maybe Lactose intolerance?

I've been getting hives (1-3 small bumps) in a same spot on my tummy right after eating breakfast, a few x a week. Weird! Maybe Lactose intolerance?

NOT LACTOSE INTOL: When you have lactose intolerance, you lack the enzyme needed to digest lactose sugar. If you ingest foods with lactose, it is digested by gut germs making you gassy and often have watery acidic stools. This is not allergic and does not give hives.Recurrent hives is a single location may be a local contact agent like the nickle in a buckle, or other allergy producing trigger. ...Read more

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My 5yr old gets rash/hives on face and behind her ears after eating ice cream or water ice for a total of 4 incidences. Why is this happening?

My 5yr old gets rash/hives on face and behind her ears after eating ice cream or water ice for a total of 4 incidences. Why is this happening?

Cold urticaria?: Assuming that water ice is water only, your son may have cold-induced urticaria, hives caused by exposure to cold. If this is the case, it is a "physical urticaria", caused by the cold. To find out exactly what goes on see a board-certified allergist/immunologist. ...Read more

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Urticaria with diaherria. After eating the same food sometimes allergy occurred sometimes it's not.

Urticaria with diaherria. After eating the same food sometimes allergy occurred sometimes it's not.

Avoid that food: Now you can see your doctor and have allergy testing. Otherwise avoid the food that irritates you ...Read more

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11 month old girl had urticaria on face (lasted 40min) after eating pasta, courgettes, apricot yogurt, soya yogurt (1 tsp, 1st time), apple. 1st epis.

11 month old girl had urticaria on face (lasted 40min) after eating pasta, courgettes, apricot yogurt, soya yogurt (1 tsp, 1st time), apple. 1st epis.

Allergic reaction: There are so many things in the list that she could be allergic too. There is a very good blood test--immunocap that can test for allergies to food to identify the food. Start with very simple foods and slowly add one at a time to see if you can pin point the culprit ...Read more

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10years ago I had an alergic reaction after eating shrimp I was told to avoid shellfish but I miss eating fried clams is there something I can do?

10years ago I had an alergic reaction after eating shrimp I was told to avoid shellfish but I miss eating fried clams is there something I can do?

Discuss with PCP: There are a variety of available ways to verify any food allergy and your pcp can help you find one. Blood or prick tests for a variety of foods can help decide if your issue was with the shrimp, or the seasoning it may have been prepared in. Further testing by an allergist may also be indicated. Good luck and good eating. ...Read more

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Recently regular cooked shellfish (mussels, clams etc) is causing me runs. Almost immediately after eating them or just a couple of hours after. Help?

Recently regular cooked shellfish (mussels, clams etc) is causing me runs. Almost immediately after eating them or just a couple of hours after. Help?

No shellfish for now: It seems for some reasons there may be a correlation with the shellfish. Sto eating for a while. It could be an allergic reaction or food poisoning. If the runs persist you must be evaluated ...Read more

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Is anaphylaxis without hives or swelling common? Would chest pain alone after eating code as anaphylaxis in your clinical and educational experience

Is anaphylaxis without hives or swelling common? Would chest pain alone after eating code as anaphylaxis in your clinical and educational experience

Uncommon, but: Anaphylaxis can still happen without hives or swollen soft tissues, can manifest as severe shortness of breath, blocked upper airway, severe hypotension, and other less common reactions. Chest pain is different, can be cardiac (e.g. coronary spasm) or esophageal spasm, its relation to eating cod can be just coincidental, and you need to make sure it isn't a cardiac problem first, good luck ...Read more

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I've gotten sick after eating shellfish, pass out then throw up and diarrhiah. Is that shellfish allergy?

I've gotten sick after eating shellfish, pass out then throw up and diarrhiah. Is that shellfish allergy?

Possibly: Could also be food poisoning or food infection (the former caused by bacteria in the shellfish, the latter by toxins in the shellfish). How soon after eating did you get ill? ...Read more

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Each time my child goes to the beach if any sand touches her skin breaks out in hives, could this relate to her severe seafood allergy?

Each time my child goes to the beach if any sand touches her skin breaks out in hives, could this relate to her severe seafood allergy?

Most likely: The sand itself shouldn't cause any problems but the stuff in the sand ie parts of sea critters can definitely cause problems
...Read more

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Spewing and itching after eating seafood?

Spewing and itching after eating seafood?

Allergic: This is an anaphylactic reaction and from now on you must avoid the seafood which caused the problem and carry an Epinephrine pack (2 syringes) with you in case of accidental exposure. Do note that seafood allergy is usually specific to that seafood (however shrimp allergy often means crab ; lobster allergy as well). If mixed seafood was the cause, you need to consult an allergist. ...Read more

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Only after eating fish/seafood I always have a fishy smell from vagina the next day. Lasts a day or so then it goes away. Is this normal? Causes?

Only after eating fish/seafood I always have a fishy smell from vagina the next day. Lasts a day or so then it goes away. Is this normal? Causes?

Not related: Vaginal discharge requires an examination to determine the cause and treatment. Bacterial vaginosis is the most common cause and often has a vaginal odor. Vaginal itching can be a sign of a yeast infection. Sometimes vaginal discharge can be a sign of a sexual transmitted infection. Testing is important to determine the treatment and keep you and your partner safe. ...Read more

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I have very bad stomach pain after eating crab (seafood).what is the reason? Is there any home remedies?

I have very bad stomach pain after eating crab (seafood).what is the reason? Is there any home remedies?

Allergic: Unless the crab has been contaminated, you are likely allergic to crab (plus shrimp and lobster). There is no remedy which would work as well as avoidance. To confirm the presence of allergy to crab, you need to undergo skin testing or obtain a blood test for IgE to crab. ...Read more

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How long to take antihistamines to get rid of hives?

Depends: If it is truly hives then you should notice an improvement soon after taking med....If no improvement or worsening then see your doctor. ...Read more

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How long after being infected with HIV do u get hives on the skin?

Not usually: Do not believe that they are related although one may conceivably become allergic to the drugs used to treat hiv. ...Read more

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How long would I have to stay away from tylenol (acetaminophen) before determining my hives r not from that? I get hives when I take it, but also on days when I don't

How long would I have to stay away from tylenol (acetaminophen) before determining my hives r not from that? I get hives when I take it, but also on days when I don't

Not related: I'd expect tylenol (acetaminophen) induced hives to subside in less than a day after the last dose. Your hives are unlikely to be from tylenol (acetaminophen). Consult an allergist if the problem is troublesome for you. ...Read more

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How long does it take to get over hives?

Acute/chronic hives: Hives vary greatly in duration, so we call hives lasting <6 wks acute, and >6 weeks chronic. It depends on the cause. A mild drug reaction may cause hives lasting only a day or two; a severe one up to 6 months. Chronic idiopathic urticaria resolves at a rate of approx 10% each month, but not every case resolves. Hives due to a known cause recur whenever re-exposure takes place. No simple answer! ...Read more

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Hi I am allergic to pet dander and when in contact with it I get hives so how long will my hives last?

Hi I am allergic to pet dander and when in contact with it I get hives so how long will my hives last?

Hives: Depends on how long you are exposed to the dander. If it gets on your clothes, they need to be changed or washed to reduce skin exposure. Hives typically last less than 24 hours once the allergic trigger is removed but this can be sped up if oral antihistamines are used. ...Read more

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How can I get tested for an allergy if I can't be off prednisone long enough to have my system clear out? I recently got bronchitis. Doc put me on tessalon & an azmacort inhaler. The next day, I had hives. The next day, worse. Next day hives & swollen lips

How can I get tested for an allergy if I can't be off prednisone long enough to have my system clear out? I recently got bronchitis. Doc put me on tessalon & an azmacort inhaler. The next day, I had hives. The next day, worse. Next day hives & swollen lips

No need: What you are describing is not necessarily an allergy. Some individuals develop hives when they acquire a viral infection. Allergy testing is of no value in this case. You can always have a rast blood test, which is inferior to the skin test, but I still do not see the need for it in your case. The hives should subside once the infection resolves. ...Read more

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How long does it take food to get to your small bowel after eating?

How long does it take food to get to your small bowel after eating?

1-4 hrs: The stomach will typically empty most of your meal in to the small intestine by 4 hrs. However emptying begins within the first hour so your small intestine may start to "see" your meal soon after eating. ...Read more

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How long after eating tainted food could I get sick from food poisoning?

How long after eating tainted food could I get sick from food poisoning?

The meal after next: Food can go bad from a number of germs, which have onset of varying times. A rule of thumb I use is the meal after next-of you ate something bad for breakfast you will have diarrhea around dinner-time. ...Read more

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I seem to get short of breath if I wait too long in between eating, goes away completely after eating. Only happens at these times. Why? Concerns?

I seem to get short of breath if I wait too long in between eating, goes away completely after eating. Only happens at these times. Why? Concerns?

? Lo blood sugar: Check your blood sugar when you have the symptoms, from your mini history it seems that you were investigating blood sugar problems, communicate the results with your doctor, always carry a candy though and see if that helps when you get the symptoms, good luck ...Read more

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How long does it take to get out of ketosis after eating carbohydratess?

How long does it take to get out of ketosis after eating carbohydratess?

Varies: The easiest way of reversing ketosis is by including carbohydrates in your diet. In fact, regular snacking will help mitigate these symptoms to a large extent. A high protein diet, with protein rich snacks and protein shakes, is also highly recommended for relieving headaches and other symptoms. Also, it is important to keep the body hydrated by drinking adequate amount of water. ...Read more

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How long will you have after eating, to vomit, to get rid of the calories?

How long will you have after eating, to vomit, to get rid of the calories?

Uh Oh: Are you asking the panelists to help you become better at being bulimic? If so, that would be unethical for us to encourage unsafe practices. Please talk with your health care provider about your concerns regarding gaining calories from food. ...Read more

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How long does it take for a tapeworm to get from your stomach to your brain after eating?

How long does it take for a tapeworm to get from your stomach to your brain after eating?

Eggs to brain rapid: Tapeworm eggs produced by tapeworm in the intestine or ingested from contaminated water or infested pigs rapidly pass through intestinal wall in humans and can reach the brain via bloodstream lodged in brain develop into larval cyst over about 3 months. Symptoms usually develop after matter of years. Common cause of epilepsy in Africa and other infested areas. ...Read more

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I have been eating seafood for a long time, but reasonly I found out that I am allergic to anchovies. Is there a way to get rid of this completely?

Unfortunately, no: It's not uncommon to develop allergies to seafood as an adult. Usually, when allergic to one fish, you'll react to many other fish. However, allergies to fish (tuna, cod, salmon, etc.) do not cross react with shellfish or mollusks (crab, lobster, oysters, etc.), but you can be allergic to both. At this time, avoiding the food is the only way to prevent symptoms. See an allergist for more info. ...Read more

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Can I get hives from eating all berries?

Can I get hives from eating all berries?

Yes. And no: Different berries in the "rosacea" family can cause hives. Strawberries are most commonly at fault. ...Read more

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Can pregnant women get hives by eating spicy food?

Hives: Anyone with food allergy or sensitivities can get hives from certain foods. ...Read more