As of yet, there is no cure for a shellfish (including shrimp) allergy.
An estimated 2.3% of americans are allergic to seafood, including fish and shellfish. Shrimp, crab, and lobster cause most shellfish allergies.
Allergy to shellfish is considered lifelong; once a person develops the allergy, it is unlikely that they will lose it.
Treatment includes strict avoidance and carrying an epipen