Can you be allergic to some shellfish and not others?

Some people with shellfish allergy react to all shellfish; others react to only certain kinds. Reactions range from mild symptoms — such as hives or a stuffy nose — to severe and even life-threatening.

Can you be allergic to scallops but not other shellfish?

Yes, it’s possible. However, most people with one shellfish allergy are allergic to other shellfish species within the same class. Crab and shrimp are in the same class of shellfish (crustacean) and so most people are allergic to both.

Can you be allergic to bivalves?

Molluscan shellfish allergies are well known but do not appear to occur as frequently. Molluscan shellfish allergies have been documented to all classes of mollusks including gastropods (e.g., limpet, abalone), bivalves (e.g., clams, oysters, mussels), and cephalopods (e.g., squid, octopus).

Can you be allergic to clams but not oysters?

Shellfish allergy triggers Within the shellfish family, it is the crustacean group (shrimp, lobster and crab) that causes the greatest number of allergic reactions. Many shellfish-allergic people can tolerate mollusks (scallops, oysters, clams and mussels).

Can you be allergic to mussels and not oysters?

Can you be allergic to oysters but not mussels?

Since oysters are bivalve molluscs, allergy to oyster is most commonly associated with allergy to other bivalves such as clams, mussels, and scallops.

Can I eat oysters with a shellfish allergy?

Many shellfish-allergic people can eat mollusks (scallops, oysters, clams and mussels) with no problem. Still, anyone with shellfish allergy symptoms should consult an allergist before eating any other kind of shellfish.

What chemical in shellfish causes allergies?

Tropomyosin (TM) is the major allergenic protein across all edible crustacean and mollusk species. More than 60 \% of shellfish allergic patients are sensitized and react to TM, often leading to severe systemic reactions.

How common is scallop allergy?

The approximate prevalence of shellfish allergy is estimated at 0.5-2.5\% of the general population, depending on degree of consumption by age and geographic regions. The manifestations of shellfish allergy vary widely, but it tends to be more severe than most other food allergens.

Can you be allergic to mollusks and shellfish?

Mollusks include squid, snails, clams, oysters and scallops. Some people are allergic to only one type of shellfish but can eat others. Other people with shellfish allergy must avoid all shellfish. You’re at increased risk of developing a shellfish allergy if allergies of any type are common in your family.

Did you know that there are two types of shellfish allergies?

In fact, shellfish allergies are one of the most common to affect adults. Usually, people have an allergic reaction to shellfish such as shrimp and crab. But did you know that there are actually two types of shellfish that can cause allergic reaction? Shellfish are divided into two categories, Crustacea and Mollusks.

What are seafood allergies?

Seafood allergies are among the most common types of food allergies on a worldwide basis. Allergies to fish and crustacean shellfish are very common. Molluscan shellfish allergies are well known but do not appear to occur as frequently.

Is iodine allergy related to shellfish allergy?

While iodine is found in shellfish, iodine allergy is not related to shellfish allergy . The main allergen in shellfish is a muscle protein called tropomyosin, which is found in both crustaceans and mollusks. Other minor allergens have also been identified in the two types of shellfish, but the most studied is the major allergen tropomyosin.