Have you ever eaten something delicious like shrimp or crab and then experienced itching, hives, or difficulty breathing? Or have you seen a friend or family member do the same? The reason for this may be an allergy to shellfish that you may not even know about. Today, we will talk about this in detail, as if you were talking to a friend.
What exactly is a shellfish allergy?
Simply put, a shellfish allergy is a food allergy. Shellfish are animals that live in water and have a shell-like covering around their bodies. These shellfish are divided into two main groups: 1.
Crustaceans: This group includes shrimp, crayfish, crabs, and lobsters. 2.
Mollusks: This group includes clams, scallops, oysters, and mussels. So, if you have an allergy to these types of shellfish, it means that your body's immune system is reacting to certain proteins in these foods. It thinks that an enemy has arrived.
Is it bad to eat these types of shellfish?
Yes, if you have a shellfish allergy, you should avoid eating these things:
- Abalone
- Clams - (e.g. Cherrystone, Littleneck, Pismo, Quahog)
- Cockle
- Conch
- Crab
- Crawfish and crayfish
- Lobster
- Mollusks - (This is a common name)
- Mussels
- Octopus
- Oysters
- Scallops
- Shrimp and prawns
- Sea snails (Snails - marine types)
- Squid - some also call it calamari
Important: Sometimes, even if you don't eat these shellfish directly, you can still get an allergic reaction if you eat sauces, soups, or other dishes that contain them, or if you prepare something else in the same place or in the same utensils as they were cooked. So you need to be very careful.
Do all types of shellfish cause the same type of allergy?
Here's another important question. In most cases, if you're allergic to one type of shellfish, you're more likely to be allergic to other types. In particular, the crustaceans we mentioned earlier, such as shrimp and crab, are more likely to cause allergies than mollusks. However, this is not the same for everyone. For example, some people may have trouble eating a large lobster, but they may be fine eating scallops.
So, if you ever have any allergic symptoms after eating one type of shellfish, you should definitely see a doctor and get advice before eating other types of shellfish. Otherwise, don't try it, okay? Are shellfish allergy and shellfish intolerance the same thing?
Yes, this is a bit confusing. But there is a big difference between the two. If you get an upset stomach or nausea after eating shellfish, it is likely a shellfish intolerance, which means your body is having trouble digesting it. This is mainly a stomach upset. However, a shellfish allergy is more serious . It can affect your entire body, and sometimes it can be life-threatening. An allergist can help you figure out exactly which one you have. Who gets shellfish allergies? How common is it?
In fact, anyone can develop a shellfish allergy. Even if you have eaten shellfish without any problems before, you can suddenly develop an allergy. Isn't it surprising? Although it can happen at any age, it is more common in adults than in children. According to statistics from the United States, about 60% of people with shellfish allergies first develop symptoms as adults. This may be because children do not eat shellfish much when they are young. Many people only start to taste them as adults. That is why symptoms may appear later. A significant proportion of the world's population (in some countries, about 2%) suffers from this allergy. What are the symptoms of a shellfish allergy?
This is something we all need to be aware of. The symptoms of a shellfish allergy can range from mild to life-threatening. The symptoms vary from person to person. Here are some common symptoms:- Itching , hives
- If you have skin conditions like eczema, they may worsen.
- Numbness or swelling of the lips, tongue, or throat
- Chest tightness, wheezing, cough, difficulty breathing
- Stomach pain , nausea , indigestion , vomiting, diarrhea
- Dizziness, slow pulse, fainting
- Pale or bluish skin
- Anaphylaxis: This is the most dangerous condition.This affects multiple body systems at once and can even lead to death if not treated quickly.
These symptoms usually appear within minutes to hours of eating shellfish. What causes a shellfish allergy?
Simply put, this happens because our immune system makes a bad decision. Normally, the immune system protects us from germs that cause disease. But in the case of a food allergy, the body mistakenly identifies something (often a protein) in a harmless food as an "enemy" and starts to fight it. The most dangerous complication of a shellfish allergy: Anaphylactic Shock
As we've said before, the most dangerous thing about this is a condition called anaphylactic shock . This is a very severe allergic reaction. Unfortunately, it's hard to predict exactly when and how these allergic reactions will occur. Maybe the first time you eat shellfish, you'll just get a little itchy. But the second time you eat it, you could have a severe anaphylactic reaction. That's why if you have any allergic symptoms after eating any food, even if it's a minor one, you should definitely tell a doctor. It's safest to identify an allergy before it becomes a big problem.
How do you diagnose a shellfish allergy?
Identifying a shellfish allergy can sometimes be challenging because symptoms vary from person to person. Even the same person may experience different symptoms after eating shellfish from day to day. Sometimes, you may not eat shellfish, but you may be allergic to shellfish if you are exposed to the fumes from cooking them or if you eat other foods that contain shellfish. Your doctor or allergist will ask you questions like:- What did you eat? How much did you eat?
- When did the symptoms appear?
- What are the symptoms?
- How long have those symptoms been present?
Then, with this information, you can do tests like these to confirm the allergy:- Skin prick test: This involves placing a small drop of the substance you think you may be allergic to on your skin and gently pricking it with a small needle. If the area turns red and itches within 15-20 minutes, it means you have an allergy.
- Blood test: This can check for antibodies related to food allergies in the blood. However, this alone cannot tell if you have an allergy.
These tests alone cannot provide a definitive diagnosis. Your symptoms, the information you provide, and all of this will help your doctor make a diagnosis. Sometimes, an oral food challenge may also be performed. This involves giving you small amounts of the food you think you are allergic to, under the close supervision of a doctor. But this should be done very carefully. How to manage a shellfish allergy?
Unfortunately, you can't "get rid" of a shellfish allergy. That is, you can't take medication or do anything to completely cure it. So, the best thing you can do to stay healthy is to avoid shellfish altogether. You should also be careful not to eat shellfish, but also to avoid other foods that may contain shellfish. In many countries, food manufacturers are required by law to clearly list common allergens like shellfish on the label of the package. Sri Lanka has similar laws. So when you buy something from the store, look carefully at the "ingredients" section. What should I do if I have an allergic reaction?
This is what you need to know in an emergency. If you have a severe allergic reaction, called anaphylaxis, the main treatment is a medicine called epinephrine . If a doctor confirms that you have a shellfish allergy, he or she will prescribe an epinephrine auto-injector , a self-injectable injection (such as an EpiPen®). The doctor will also teach you how to use it. If you have a severe reaction and you get the injection, the next thing to do is to call an ambulance as soon as possible. Tell them what happened and that you used the epinephrine injection. They may be able to give you another dose of epinephrine after the ambulance arrives. When should you use an epinephrine injection?
If you notice any of these symptoms, use the injection immediately :- Difficulty breathing, coughing, weak pulse, body aches, and sore throat.
- If symptoms occur in different parts of the body (e.g., nausea, vomiting, and diarrhea with bloating).
Allergists say that if you are unsure whether you need the injection or not, it is best to have it. Because the benefits of getting it far outweigh the risks of getting it unnecessarily.
What other medications help with shellfish allergy?
If you have minor symptoms (e.g., a little itching, a little urine smell), a doctor may recommend using an antihistamine (e.g., Pyridoxine, Benadryl®). However, remember, only epinephrine can treat a severe condition like anaphylaxis. How do you prevent an allergic reaction to shellfish?
The only and best way to do this is to avoid shellfish altogether. In addition, consider these things:- Be careful when handling shellfish: Sometimes, shellfish can be exposed to airborne particles from cooking. This is uncommon, but it can happen. Some people can also get allergic reactions from handling shellfish.
- Be very careful at seafood restaurants: Even if you order a dish that doesn't contain shellfish, the same utensils and oil that were used to prepare the dish may have been used to prepare the shellfish (cross-contamination). So ask questions about how the food is prepared.
What other foods may contain shellfish?
These foods can also sometimes contain shellfish, so think before eating them too:- Seafood soups like bouillabaisse and cioppino.
- Cuttlefish ink.
- Fish stock.
- Imitation fish (sometimes made from shellfish).
- Seafood flavoring.
- Surimi.
Will shellfish allergy go away?
Many people have a shellfish allergy for life. It rarely goes away over time. How can I live healthy with a shellfish allergy?
You can live a happy, healthy, and active life even if you have a shellfish allergy. However, there are a few things you should keep in mind for your safety:- Be aware of what you are eating. Read food labels carefully – even if you have eaten something before and it was fine, check it again. Manufacturers sometimes change their recipes.
- If your child has this allergy, teach them not to eat food from friends.
- Be very careful when eating out. Ask about the ingredients in the food and how it is prepared.
- If possible, wear a medical alert bracelet or keep a card nearby.
- If your doctor has given you an epinephrine injection, keep it with you at all times. If possible, keep two doses. You may need to take another if one dose is not enough.
When should I see a doctor?
If you experience any allergic symptoms after eating shellfish, even if they are minor, you should definitely see a doctor. Remember, even if the first reaction is mild, the next one can be severe. So it is wise to get tested for shellfish allergy. You should go to the emergency room (ETU) if you develop symptoms of anaphylaxis (difficulty breathing/swallowing) or if the symptoms do not subside after an epinephrine injection. Is there a link between shellfish and iodine allergies?
Some people confuse shellfish allergy with iodine allergy. This is because shellfish contain iodine. However, just because you have a shellfish allergy does not mean you are also allergic to iodine. Even if you have a shellfish allergy, there is no need to worry about the iodine-containing radiocontrast material used for some medical tests. However, it is a good idea to talk to your doctor about this. Finally, you have to say...
A shellfish allergy is a really annoying thing. Especially if you are a seafood lover, it can have a big impact on your life. However, the most important thing is to be careful. By avoiding shellfish completely, you can prevent most of the discomfort (and sometimes even life-threatening) that this allergy can cause. If you have any unusual symptoms after eating shellfish, see a doctor or an allergist right away to find out exactly what it is. They will then explain to you everything you need to know about how to take care of yourself and how to use an epinephrine injection in an emergency. Your health is in your hands! Shellfish allergy, seafood allergy, anaphylaxis, epinephrine, food allergy, allergy symptoms, shellfish
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