Food allergy is an immune system reaction that occurs soon after eating a certain food. For example, lactose intolerance and celiac disease can be confused with a food allergy because they all have such similar symptoms. Those symptoms can stem from other common causes, including stomach flu or food poisoning. 1. The exact pathogenesis of food allergy is still not clear. Infants and young children may present with a diverse range of gastrointestinal (GI) allergies and intolerances that are triggered by specific food proteins or other food constituents (eg, carbohydrates, fat). Overview. Food allergy symptoms can be broken down into types: skin, gastrointestinal, respiratory and cardiovascular. Food allergies vary from individual to individual; the intensity, the symptoms and consequences, the responsible foods etc. Most people will find curries, Mexican food etc might make them dash to the loo or give them a dodgy stomach the morning after but for other people the reaction is more intense. Allergy symptoms, which depend on the substance involved, can affect your airways, sinuses and nasal passages, skin, and digestive system. Several other diseases share symptoms with food allergies, including ulcers and digestive system cancers. But if you have COVID-19, GI problems may slow your recovery. Among some of the lesser-known symptoms of seasonal allergies are stomach upset, constipation, diarrhea, GERD, acid reflux, nausea, and stomach cramping. In some severe cases, allergies can trigger a life-threatening reaction known as anaphylaxis. Symptoms. The main symptoms of a shellfish allergy vary, but they can include vomiting, diarrhea, stomach pain, shortness of breath, coughing, chest pain, and swelling of the face, lips, tongue, or throat. It may be clinically difficult to distinguish these conditions because there is significant overlap in symptoms. Allergic reactions can range from mild to severe. Because digestive/gastrointestinal symptoms are tied to what you eat, it’s important to figure out if your upset stomach is caused by an allergy or a digestive problem. These can lead to vomiting , diarrhea, or … 4,5 Gastrointestinal symptoms in food allergy have been explained by alterations in transport across the intestinal wall (increased secretory and/or decreased absorptive functions), increased permeability, and motility of the intestine. It is one of the most annoying and uncomfortable symptoms to deal with, but it can be managed if it is being caused by food intolerance or allergy.. To find out which foods could be causing your bloated stomach or other symptoms similar to fatigue then please do order an intolerance test today. These digestive symptoms can come with little or no upper respiratory symptoms which is why it can be difficult for these symptoms to be traced back to their source. No one likes to deal with a bloated stomach. Food allergies and digestive problems, known as food intolerances, can have similar symptoms. As far as the triggering foods are concerned, more often corn, dairy, egg, soy, wheat, yeast, and citrus are held guilty in … Even a tiny amount of the allergy-causing food can trigger signs and symptoms such as digestive problems, hives or swollen airways. A tiny amount of the allergy-causing food can trigger a life-threatening reaction known as anaphylaxis distinguish... Is an immune system reaction that occurs soon after eating a certain food all such..., or … symptoms can stem from other common causes, including stomach flu or poisoning. 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