Im Allergic To Shrimp But Not Crab
Seafood is one of the most popular types of food in the United States. However, some people are allergic to it. Allergies can develop at any time, and it can be scary to experience a reaction. One of the most common seafood allergies is to shrimp. However, some people can eat crab without experiencing any issues. Let’s dive into why this happens.
What is a Shellfish Allergy?
A shellfish allergy is an immune system response to proteins found in certain kinds of seafood. This allergy is not only limited to crustaceans like shrimp, crab, and lobster. It also includes mollusks like clams, oysters, and mussels. The allergy can be life-threatening in some cases, so it’s important to know what foods to avoid. Symptoms usually show up within minutes and can include:
- Hives
- Swelling of the face, lips, tongue, or throat
- Tightness in the chest or difficulty breathing
- Stomach cramps and nausea
- Vomiting and diarrhea
Why Am I Allergic to Shrimp?
Shrimp is one of the most common allergens found in seafood according to the Food and Drug Administration (FDA). Shrimp allergy is more common in adults than in children. The allergy usually develops after repeated exposure to shrimp, but it can develop after the first exposure as well.
The protein found in shrimp that triggers an allergic reaction is called tropomyosin. Tropomyosin is also present in other types of shellfish, including crab. However, some people who are allergic to shrimp can tolerate crab, while others can’t. This is because of differences in immune responses to the proteins found in crab and shrimp.
Why Am I Not Allergic to Crab?
If you’re allergic to shrimp, you may be nervous about trying other types of shellfish. However, if you can eat crab without any problems, it’s likely that your allergy is specific to shrimp. While crab contains the same protein as shrimp, your immune system may not recognize it as an allergen.
It’s important to note that some people who are allergic to shrimp may also be allergic to other types of shellfish, including crab. If you’re not sure whether you’re allergic to crab, it’s best to avoid it until you can see an allergist for testing.
Diagnosing a Shellfish Allergy
If you suspect you have a shellfish allergy, it’s important to see an allergist for a diagnosis. Your allergist may recommend several tests, including:
- Skin prick test: a small amount of shellfish extract is placed on your skin, and then the skin is pricked with a needle. If you’re allergic, a red, itchy bump will appear.
- Blood test: a sample of your blood is taken and tested for the presence of antibodies to shellfish.
- Oral food challenge: you eat a small amount of shellfish under medical supervision to see if you have a reaction. This test is done in a controlled environment with emergency medication on hand.
Coping with a Shellfish Allergy
If you have a shellfish allergy, the best way to cope with it is to avoid the allergen. This means avoiding all types of shrimp, crab, lobster, clams, oysters, and mussels. It’s also important to read labels carefully, as shellfish can be found in unexpected places like soups, sauces, and sushi rolls.
If you accidentally eat shellfish and have a reaction, it’s important to seek medical attention immediately. Your doctor may prescribe an epinephrine auto-injector, which can be used in case of a severe allergic reaction. You should also wear a medical alert bracelet or necklace that indicates your allergy.
The Bottom Line
If you’re allergic to shrimp, it can be scary to try other types of shellfish. However, if you can eat crab without any problems, it’s likely that your allergy is specific to shrimp. It’s important to see an allergist for a diagnosis and to avoid shellfish if you’re allergic. With proper precautions, you can still enjoy a delicious meal without worrying about a reaction.
