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Doctor insights on: Symptoms Of A Shellfish Allergy

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What are the symptoms of a shellfish allergy?

What are the symptoms of a shellfish allergy?

Oral and Stomach: Typically shellfish allergy would cause itching, burning, stinging and/ or swelling of the mouth, tongue, or lips. It may also cause stomach upset such as nausea, vomiting, cramping and possibly diarrhea. In some cases, it may cause a rash, shortness of breath, wheezing, coughing, and drop in blood pressure, or in severe cases death. ...Read more

Dr. Cynthia Lu
67 doctors shared insights

Shellfish Allergy (Definition)

A shellfish allergy is an exaggerated immune response due to exposure to shellfish protein. The reaction can present with typical symptoms of hives, respiratory symptoms (cough, wheeze, shortness of breath), GI symptoms (abdominal pain, vomiting), swelling, loss of consciousness, and can be fatal. Symptoms typically present within minutes to a couple hours ...Read more


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I have a shellfish allergy. But recently I've noticed when I eat desserts or fruits I have similar symptoms as the shellfish allergy . What is it?

I have a shellfish allergy. But recently I've noticed  when I eat  desserts or fruits I have similar symptoms as the shellfish allergy .  What is it?

Depends: What are the symptoms of shellfish allergy. It does not sound like full-blown anaphylaxis with the deserts (or you are remarkably cavalier). Oral itching or even swelling can occur with nuts or fruits contained in the deserts. If these are the only symptoms, could be oral allergy syndrome (or pollen-food syndrome). Allergens usually labile so as not to produce "full-blown" food allergy. ...Read more

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What symptoms indicate a severe shellfish allergy?

What symptoms indicate a severe shellfish allergy?

Multiple symptoms: After exposure to or ingestion of shellfish, you would experience any combination of the following symptoms: shortness of breath, cough, wheeze, chest tightness, vomiting, diarrhea, hives, swelling of the lips/tongue, throat discomfort, etc. ...Read more

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What are the symptoms of shellfish or crab allergy?

What are the symptoms of shellfish or crab allergy?

A variety!: Depending on the patient, food allergy symptoms can include:itchy mouth/throat, facial &/or airway swelling, difficulty breathing or talking, cough, wheeze, nausea, vomiting, diarrhea (can be bloody), flushing, hives, eye redness, itch, &/or swelling, runny, itchy, &/or stuffy nose, sneezing, abdominal pain, feeling of impending doom and even shock or cardiac arrest! ...Read more

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Shellfish allergy symptoms are usually what kind?

Shellfish allergy symptoms are usually what kind?

Oral, cutaneous: Shellfish reaction typically start with itching and burning of the mouth and throat followed by hives. Severe cases an involve significant tongue swelling, throat closure, and wheezing. ...Read more

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Whats a type 1 shellfish allergy?

Whats a type 1 shellfish allergy?

IgE mediated: Allergic reactions that are type i are mediated by the allergic antibody ige. That means they can be diagnosed using a skin or blood test for ige. They are immediate reactions with symptoms occurring within minutes to hours after exposure. Symptoms can be hives, swelling, anaphylaxis, asthma, etc. ...Read more

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How can a shellfish allergy start?

How can a shellfish allergy start?

Anytime: Shellfish allergy can start anytime. Typically this is seen in adults but can be seen in children. Unfortunatley there is no good way to predict who will develop this and when. ...Read more

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Which drugs can help my shellfish allergy?

Epinephrine: For severe shellfish allergy, only injectable Epinephrine for reactions is a reliable treatment. Some people with very mild allergies can use antihistamines alone, but everyone should have Epinephrine available. Unfortunately, there are no drugs that will prevent or resolve a food allergy so you can eat the food without risk, although this is an active area of research. ...Read more

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How long does pain from shellfish allergy last?

How long does pain from shellfish allergy last?

Hours: Not sure one would expect pain from a shellfish allergy reaction. In general, an allergic reaction from a food would last a couple of hours to maybe a day or so, if left untreated. If the reaction is treated them one should expect a quicker resloution. ...Read more

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Do any tests indicate a severe shellfish allergy?

Positive or Negative: A positive skin or blood test for allergy to shellfish is enough evidence to diagnose an allergy if you have a convincing history of allergic reaction to shellfish. If the history is inconclusive, a blinded food challenge can be performed to help confirm the diagnosis. If you are diagnosed with shellfish allergy, you are at risk of a life threatening reaction. There is no test for severity. ...Read more

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Dr. John Chiu
2,491 doctors shared insights

Allergies (Definition)

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