Shortly after enjoying a meal, if you feel an intense itch spreading across your skin, followed by redness and hives, and you find yourself scratching uncontrollably, these symptoms might be more than just a mild irritation; they could be signs of a food allergy.
Food allergies occur when the immune system mistakenly identifies a harmless food protein as a threat. This triggers an immune response, releasing chemicals such as histamine into the bloodstream, leading to various symptoms, including itching, hives, swelling, and even more severe reactions like anaphylaxis. According to the Journal of the American Medical Association (JAMA), food allergies affect millions of people worldwide, with itching being one of the most common symptoms.
Itching, or pruritus, occurs as a result of histamine release in the skin. When an allergen is ingested, the immune system responds by producing immunoglobulin E (IgE) antibodies. These antibodies travel to cells that release histamine and other chemicals, causing the symptoms of an allergic reaction. The histamine binds to receptors in the skin, leading to itching, redness, and swelling.
Symptoms of food allergies can vary from mild to severe and may include itching and hives, swelling of the lips, face, tongue, and throat, abdominal pain, diarrhea, nausea, or vomiting, shortness of breath, wheezing, or nasal congestion, and in extreme cases, anaphylaxis, a severe, potentially life-threatening reaction.
Here are some foods that may cause itching due to food allergy:
Peanuts: Peanuts are one of the most common food allergens. A peanut allergy can cause severe itching, hives, swelling, and in some cases, anaphylaxis. The proteins in peanuts are highly allergenic, and even a small amount can trigger a reaction.
Tree nuts: Tree nuts, such as almonds, walnuts, cashews, and pistachios, are also common allergens. These nuts can cause itching, hives, and swelling. Tree nut allergies are often lifelong and can be severe, leading to anaphylactic reactions.
Shellfish: Shellfish, including shrimp, crab, and lobster, can cause intense itching and other allergic symptoms. Shellfish allergies are more common in adults and can develop later in life. They often result in severe reactions, including anaphylaxis.
Milk: Milk allergies can cause itching, hives, and gastrointestinal symptoms such as abdominal pain and vomiting. Unlike lactose intolerance, which involves digestive issues, a milk allergy involves the immune system. Cow's milk is a common allergen, particularly in children.
Eggs: Egg allergies are common in children but can persist into adulthood. The proteins in egg whites are typically the cause of allergic reactions, leading to itching, hives, and respiratory symptoms. Cooking eggs does not always eliminate their allergenic properties.
Wheat: Wheat allergies, distinct from celiac disease, can cause itching, hives, and gastrointestinal symptoms. Wheat proteins, such as gluten, can trigger an immune response leading to various allergic reactions.
Precaution:
Understanding food allergies and being aware of common allergenic foods can help prevent discomfort and severe reactions. If you experience itching or other symptoms after consuming certain foods, it is essential to consult with a doctor for proper diagnosis and management.
Discover the latest Business News, Sensex, and Nifty updates. Obtain Personal Finance insights, tax queries, and expert opinions on Moneycontrol or download the Moneycontrol App to stay updated!
