If you are allergic to shellfish all shellfish?

It's possible to be allergic to all shellfish, but it's not always the case.

Here's why:

* Shellfish is a broad category: Shellfish includes a wide variety of creatures, including:

* Crustaceans: Crabs, lobsters, shrimp, crayfish

* Mollusks: Clams, oysters, mussels, scallops, snails, squid, octopus

* Allergies can be specific: Some people might be allergic to only certain types of shellfish, like crustaceans but not mollusks, or vice versa.

* Cross-reactivity: Some people with shellfish allergies are also allergic to other foods like dust mites or pollen due to similar proteins.

It's crucial to talk to your doctor or allergist to determine which specific types of shellfish you are allergic to. They can help you understand your allergy and recommend the best course of action.