Contact Dermititis
27/11/2021Shellfish Allergy
15/12/2021
Althoughย ๐๐ข๐ฌ๐ก ๐๐ฅ๐ฅ๐๐ซ๐ ๐ฒย is common, fortunately, it is not as common as other allergies.โฃ
Its incidence varies from country to country, and around 40% of people with fish allergy had their first reaction when they were adults.โฃ
Inย ๐๐ถ๐ณ๐ฐ๐ฑ๐ฆ, less than 0.1% of children have aย fish allergy.โฃ
- The protein causing most of the allergic reactions is calledย ๐๐๐ซ๐ฏ๐๐ฅ๐๐ฎ๐ฆ๐ข๐ง, and it exists in the fishโs muscle.โฃ
- Some species will have other allergens, which might also lead to allergic reactions.โฃ
๐๐จ๐ย has been the primary source of studies and information regardingย fish allergy.โฃ
Though most fishes contain this protein, thisย ๐๐๐๐ ๐๐๐ย mean that an allergy to a fish will lead to an allergy to all fish.โฃ
- Expect to have cross-reactions between fish in the same family (see the tables I made) but to a lesser extent between fish from different groups.โฃ
- Studies show that, in this case, the cross-reactivity is moderate or small.โฃ
Some main aspects to note are the following:โฃ
- ๐๐๐ฅย andย ๐๐จ๐ย likelyย cross-reactโฃ
- ๐๐ง๐๐ก๐จ๐ฏ๐ฒย andย ๐๐จ๐ย cross-sensitivity is found in nearlyย 35% of childrenโฃ
- ๐๐ง๐๐ก๐จ๐ฏ๐ฒย has a high content ofย ๐ฉ๐ช๐ด๐ต๐ข๐ฎ๐ช๐ฏ๐ฆ, so some reactions might not be allergicโฃ
- ๐
๐ข๐ฌ๐ก ๐ ๐๐ฅ๐๐ญ๐ข๐ง๐ย is used in medication, like inย ๐ท๐ข๐ค๐ค๐ช๐ฏ๐ฆ๐ด, but generally do not lead to a reaction in people who are allergic to fishโฃ
- Fish allergiesย typically areย ๐ฅ๐ข๐๐๐ฅ๐จ๐ง๐ โฃ
There are cases in which an apparent allergic reaction to fish has normal investigations.โฃ
- In some cases, this might be due to the presence of a parasite called ๐๐ง๐ข๐ฌ๐๐ค๐ข๐ฌ.โฃ
- Investigation for this parasite should be done through blood tests.โฃ
Final note:โฃ
Think of the fish in aย ๐ง๐ช๐ด๐ฉ ๐ต๐ข๐ฏ๐ฌ!
ย
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