Skin tests or blood tests for allergen specific IgE help confirm or exclude potential triggers. This approach will help to exclude conditions that can sometimes be confused with food allergy. ![]() Reliable diagnosis of food allergy is importantĪ doctor will ask a series of questions that may help to narrow down the list of likely causes of allergy such as foods or medicines consumed that day, or exposure to stinging insects. As many children have allergies to other foods such as cow’s milk, egg or other nuts, a doctor may test for these allergies as well. Other allergies may be presentįood allergy is more common in people who have other allergies such as allergic rhinitis (hay fever), asthma or eczema. Peanuts and tree nuts are amongst the most common foods causing life threatening anaphylaxis. Young children may become pale and floppy.ĭeaths from food allergy are rare in Australia, but mild, moderate and severe allergic reactions are common. Symptoms of severe allergic reactions (anaphylaxis), include any of the following difficult/noisy breathing, swelling of the tongue, swelling/tightness in the throat, difficulty talking/hoarse voice, wheeze or persistent cough, persistent dizziness and/or collapse. Other symptoms include stomach pains, or diarrhoea. Symptoms of food allergy typically include hives (urticaria), swelling around the mouth, and vomiting, usually within 30 minutes of eating a food. Allergic reactions to peanut, tree nuts or seeds can sometimes be severe Therefore, it is not possible to reliably predict the likelihood of allergy to seed or nut like foods without allergy testing to that particular food. It may be difficult to predict whether a person will be allergic to one unique protein allergen present in one food only, or several similar cross reactive proteins present in multiple foods. Examples of cross reactivity include people allergic to similar proteins present in hen and duck eggs cow's and goat's milk or cashew and pistachio nuts. If the same protein is present in several foods, then that person may have allergic reactions to any food containing that protein. Cross reactivity is difficult to understand and harder to predictĬross reactivity means that a similar protein is present in a range of different foods. Therefore, someone who is allergic to peanut is not automatically going to be allergic to tree nuts. The proteins in peanut are very different to those in tree nuts which include almonds, Brazil nuts, cashews, hazelnut, macadamia nuts, pecans, pistachios or walnuts. Peanuts are legumes, like peas, lentils and chickpeas, and diverse other plants like wattles and the black bean tree of Queensland. Many of the foods that we consider to be nuts are part of a seed or its food source, often with the outer fruit or coating removed. Coconut husk and inner white flesh is also a seed. ![]() Small seeds include sesame seeds, sunflower seeds, poppy seeds or pumpkin seeds.Tree nuts has limited meaning, as the foods that we consume from these plants come from a wide variety of different botanical families such as Rosaceae (almonds), Anacardiaceae (cashews), Proteaceae (macadamias) or Lecythidaceae (Brazil nuts). ![]()
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