Is it possible for me to eat freshwater crawfish if i'm allergic to shellfish?

Might not: You might not want to eat crawfish if you have real food allergy symptoms to other shellfish. They can cross-react. If you really like to eat crawfish, you should see an allergist to be evaluated if you have real allergy to other shellfish. You might need an allergy test to crawfish to gage your risk of developing a real allergy reaction. Then your doctor can do an oral food challenge to crawfish.