Can shellfish allergy sufferers eat crab?
Quick Answer
No
Crab is a type of shellfish and people with shellfish allergies are typically allergic to all types of shellfish, including crab. Eating crab can trigger an allergic reaction in those with a shellfish allergy.

What Is It?
A shellfish allergy is an immune system response after exposure to shellfish. In many cases, the reaction is severe and can be life-threatening.
How to Tell
Signs of a shellfish allergy can include hives, itching, swelling, wheezing, abdominal pain, diarrhea, dizziness or fainting.
Why It Can Be Risky
People with a shellfish allergy are at risk of experiencing a severe allergic reaction, known as anaphylaxis, if they consume shellfish.
Anaphylaxis is a medical emergency that requires immediate treatment. Symptoms can include a rapid, weak pulse, nausea and vomiting, and loss of consciousness.
Safe Alternatives
Alternatives to crab for those with a shellfish allergy can include chicken, turkey, or fish like salmon or tuna.