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            Allergic reactions

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            • Allergic Reaction
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            Weaning a child into solids.
            Weaning a child into solids
            09/01/2023
            Public transport and Allergic Reactions
            Public Transport and Allergic Reactions
            16/01/2023

            Allergic reactions

            Published by Dr José Costa at 09/01/2023

            In normal conditions, our immune system is used to protect us against viruses and bacteria.⁣

            If there is either no development of tolerance or that tolerance vanishes, the immune system turns against those proteins (allergens) and reacts.⁣
            ⁣
            𝗪𝐡𝐚𝐭 𝐚𝐫𝐞 𝐭𝐡𝐞 𝐜𝐨𝐦𝐦𝐨𝐧 𝐚𝐥𝐥𝐞𝐫𝐠𝐞𝐧𝐬?⁣

            • 𝘍𝘰𝘰𝘥𝘴 - peanuts, tree nuts, finned fish, shellfish, eggs, milk, soy, and wheat.⁣
            • 𝘓𝘢𝘵𝘦𝘹 𝘢𝘯𝘥 𝘧𝘰𝘰𝘥𝘴 𝘤𝘳𝘰𝘴𝘴 𝘳𝘦𝘢𝘤𝘵𝘪𝘯𝘨 𝘸𝘪𝘵𝘩 𝘪𝘵 (These foods include banana, kiwi, chestnut, avocado, pineapple, passion fruit, apricot, and grape )⁣
            • 𝘈𝘯𝘪𝘮𝘢𝘭 𝘥𝘢𝘯𝘥𝘦𝘳⁣
            • 𝘗𝘭𝘢𝘯𝘵𝘴 𝘢𝘯𝘥 𝘱𝘰𝘭𝘭𝘦𝘯𝘴⁣
            • 𝘋𝘶𝘴𝘵 𝘮𝘪𝘵𝘦𝘴⁣
            • 𝘔𝘰𝘭𝘥⁣

            ⁣𝐓𝐡𝐞𝐫𝐞 𝐚𝐫𝐞 𝐭𝐰𝐨 𝐦𝐚𝐢𝐧 𝐫𝐞𝐚𝐜𝐭𝐢𝐨𝐧𝐬 𝐚𝐬𝐬𝐨𝐜𝐢𝐚𝐭𝐞𝐝 𝐰𝐢𝐭𝐡 𝐭𝐡𝐞𝐦.⁣

            1. 𝘛𝘺𝘱𝘦 𝘐 (𝘪𝘮𝘮𝘦𝘥𝘪𝘢𝘵𝘦 𝘳𝘦𝘢𝘤𝘵𝘪𝘰𝘯𝘴) – 𝘐𝘨𝘌 𝘮𝘦𝘥𝘪𝘢𝘵𝘦𝘥⁣
              • An initial sensitisation is needed before a reaction can occur.⁣
              • The immune system considers the allergen as an “invader” and seeks to destroy it by using IgE, which leads to the release (among others) of histamine.⁣
              • Histamine then causes blood vessels to increase in size, which in association with other chemicals, leads to allergy symptoms.
            2. 𝘛𝘺𝘱𝘦 𝘐𝘝 (𝘥𝘦𝘭𝘢𝘺𝘦𝘥 𝘳𝘦𝘢𝘤𝘵𝘪𝘰𝘯𝘴) – 𝘯𝘰𝘯-𝘐𝘨𝘌 𝘮𝘦𝘥𝘪𝘢𝘵𝘦𝘥⁣
              • Reactions to food protein are likely due to an immature immune system of the gut mucosa. They are mediated by T Cells.⁣
              • This is the most common kind of allergy in the first few years of life.⁣
              • As it takes several hours between ingestion and symptoms to show, it tends to go under recognised, leading to significant parental frustration.⁣
            What type of allergic reactions and where do they show up.

            The Symptoms depend on what the allergen is and the type of reactions.⁣

            • They vary from very mild to life-threatening (Anaphylaxis and FPIES – which I will talk about in another post).⁣
            • ⁣The ones below are IgE mediated but have a look at the table for signs of delayed reactions.⁣⁣

            ⁣⁣𝐅𝐨𝐨𝐝 𝐚𝐥𝐥𝐞𝐫𝐠𝐢𝐞𝐬⁣⁣:

            • Mouth tingling⁣⁣
            • Swelling of lips, face, tongue, or throat⁣⁣
            • Hives⁣⁣
            • Vomiting and/or diarrhoea⁣⁣
            • Sometimes flare-up of eczema⁣⁣
            • Wheeze, stridor, difficulty breathing (𝐀𝐧𝐚𝐩𝐡𝐲𝐥𝐚𝐱𝐢𝐬)⁣⁣
            • Altered conscious state (𝐀𝐧𝐚𝐩𝐡𝐲𝐥𝐚𝐱𝐢𝐬)⁣⁣
            • Hypotension (𝐀𝐧𝐚𝐩𝐡𝐲𝐥𝐚𝐱𝐢𝐬)⁣⁣

            ⁣⁣
            𝐀𝐥𝐥𝐞𝐫𝐠𝐢𝐜 𝐫𝐡𝐢𝐧𝐢𝐭𝐢𝐬⁣⁣:

            • Sneezing⁣⁣
            • Itchy, blocked or runny nose⁣⁣
            • Itchy, red, watery eyes (allergic conjunctivitis)⁣⁣
            • Itchy mouth⁣⁣
            • Flare-up of eczema⁣⁣

            ⁣⁣
            𝐌𝐞𝐝𝐢𝐜𝐚𝐭𝐢𝐨𝐧⁣⁣:

            • Swelling of lips, face, tongue, or throat⁣⁣
            • Hives⁣⁣
            • Vomiting and/or diarrhoea⁣⁣
            • Wheeze, stridor, difficulty breathing (𝐀𝐧𝐚𝐩𝐡𝐲𝐥𝐚𝐱𝐢𝐬)⁣⁣
            • Altered conscious state (𝐀𝐧𝐚𝐩𝐡𝐲𝐥𝐚𝐱𝐢𝐬)⁣⁣
            • Hypotension (𝐀𝐧𝐚𝐩𝐡𝐲𝐥𝐚𝐱𝐢𝐬)⁣⁣


            𝐈𝐧𝐬𝐞𝐜𝐭 𝐬𝐭𝐢𝐧𝐠𝐬⁣⁣:

            • Swelling at the sting site, which can spread rapidly⁣⁣
            • Hives or itching throughout your body⁣⁣
            • Wheeze, stridor, difficulty breathing (𝐀𝐧𝐚𝐩𝐡𝐲𝐥𝐚𝐱𝐢𝐬)⁣⁣
            • Altered conscious state (𝐀𝐧𝐚𝐩𝐡𝐲𝐥𝐚𝐱𝐢𝐬)⁣⁣
            • Hypotension (𝐀𝐧𝐚𝐩𝐡𝐲𝐥𝐚𝐱𝐢𝐬)⁣⁣

            https://www.facebook.com/thechildrensallergy/posts/pfbid0eydWKa8FNDcCdU2B2dhMMHFKt73KATcSvMdQNDXw1SxPVz5CSKJPKxjXJv9UD1QVl

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            Dr José Costa
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