Allergy and Immunotherapy
8 Food Allergies You Should Know About
Food allergies are an increasing concern for many people. These allergies occur when the immune system mistakenly identifies a food as harmful, triggering a range of symptoms that can vary in severity. While some allergies are mild and manageable, others can result in life-threatening reactions. Learning about these allergies and their symptoms can help you take preventive measures. Here are 8 common food allergies you should be aware of.
1. Peanut Allergy
Peanut allergies are among the most common and severe food allergies. They can trigger anaphylaxis, a life-threatening reaction that causes swelling of the throat, difficulty breathing, and a drop in blood pressure. Even trace amounts of peanuts can cause a severe reaction. Those with peanut allergies need to be cautious of foods containing peanuts, peanut oil, or peanut traces.
2. Shellfish Allergy
Shellfish allergies are another common allergy, particularly in adults. It can include allergies to crustaceans like shrimp, crab, and lobster, or molluscs such as squid and oysters. The symptoms can range from hives and swelling to severe anaphylaxis. Shellfish is often hidden in sauces and prepared dishes, so it’s necessary to be vigilant when dining out.
3. Milk Allergy
Milk allergies are typically more common in infants and young children, though some may outgrow them. A milk allergy occurs when the immune system reacts to proteins found in cow’s milk, such as casein and whey. Symptoms can range from mild reactions like rashes to severe reactions like difficulty breathing. It’s necessary to check food labels for milk-based ingredients like lactose, casein, or whey.
4. Egg Allergy
Egg allergies are common in children but can persist into adulthood for some. An allergy to eggs can cause reactions to both egg whites and yolks, though egg whites tend to be more problematic. Symptoms include hives, stomach upset, and in severe cases, anaphylaxis. It’s necessary to avoid foods that contain eggs or egg-derived ingredients such as egg whites or lecithin.
5. Wheat Allergy
A wheat allergy is different from coeliac disease and gluten intolerance. It occurs when the body’s immune system reacts to proteins found in wheat. Symptoms can range from rashes and stomach pain to respiratory distress or anaphylaxis. Those with wheat allergies should avoid products containing wheat, including certain breads, cereals, and baked goods.
6. Soy Allergy
Soy allergies are common in children but can also affect adults. Symptoms can range from mild discomfort, like hives or digestive issues, to more severe reactions. Soy is a common ingredient in many processed foods, sauces, and dairy substitutes, so reading labels carefully is necessary for anyone with a soy allergy.
7. Tree Nut Allergy
Tree nuts, such as almonds, cashews, walnuts, and hazelnuts, can trigger allergic reactions ranging from mild to severe. Unlike peanuts, tree nuts are not legumes, but they can cause similar reactions. Tree nut allergies tend to be lifelong, and those with this allergy must avoid all forms of tree nuts and products that may contain them.
8. Fish Allergy
Fish allergies are common, particularly in adults. Common culprits include salmon, tuna, and cod. Like shellfish allergies, fish allergies can cause severe reactions, including anaphylaxis. Individuals with fish allergies must avoid fish in all forms, including fish sauce, surimi, and fish oil supplements.
Recognising the Symptoms of Food Allergies
The symptoms of food allergies can vary widely. Mild symptoms may include:
Food allergies can sometimes manifest alongside respiratory issues, such as chronic nasal congestion or sinus pressure. A Nose & Sinus ENT Specialist in Singapore can assess whether your upper respiratory symptoms are being aggravated by systemic allergic inflammation caused by your diet.
- Hives or skin rashes
- Swelling of the lips, tongue, or throat
- Stomach discomfort or vomiting
Severe symptoms, including anaphylaxis, may include:
- Difficulty breathing
- Tightness in the throat
- A drop in blood pressure
- Loss of consciousness
If you experience any of these symptoms, particularly after consuming a known allergen, seek immediate medical attention.
If you suspect you have a reaction to certain foods, it is important to confirm the trigger through clinical testing rather than self-diagnosis. An Allergy Specialist in Singapore can perform skin prick tests or blood tests to identify specific allergens and help you distinguish between a food allergy and a food intolerance.
Navigating life with multiple food sensitivities requires a professional medical strategy. Consulting an ENT Specialist Singapore can provide the necessary clinical oversight to ensure your symptoms are accurately diagnosed and that you have a clear action plan for accidental exposures.
Managing Food Allergies
Food allergies can be managed through the avoidance of triggers and, in some cases, medication. People with severe food allergies may carry epinephrine (an injectable medication) to treat anaphylaxis. Immunotherapy, such as allergy shots or sublingual immunotherapy (SLIT), may help in reducing the severity of allergic reactions.

Conclusion
Food allergies are a health concern that should not be taken lightly. Being aware of the foods that commonly cause allergies and understanding their symptoms can help you take the necessary precautions. If you suspect you have a food allergy, it is recommended to consult an expert for a proper diagnosis and to develop an effective management plan.
At Ascent ENT, our specialists can help you manage food allergies through comprehensive testing and tailored treatments. Reach out today to book an appointment and take control of your health.

