Often 𝐬𝐞𝐚𝐟𝐨𝐨𝐝 is what is named to anything coming from the sea.
But this name seems to be mixed or interchanged with 𝐬𝐡𝐞𝐥𝐥𝐟𝐢𝐬𝐡.
Let’s clarify this.
𝐒𝐡𝐞𝐥𝐥𝐟𝐢𝐬𝐡 is made of 𝘴𝘦𝘢 𝘮𝘰𝘭𝘭𝘶𝘴𝘤𝘴 and 𝘤𝘳𝘶𝘴𝘵𝘢𝘤𝘦𝘢𝘯𝘴
Both groups are very different.
The most important allergen is a protein called 𝐭𝐫𝐨𝐩𝐨𝐦𝐲𝐨𝐬𝐢𝐧, and it can be found in the muscle of any of those species.
This is the main reason for cross-reactivity between them.
The incidence of 𝐒𝐡𝐞𝐥𝐥𝐟𝐢𝐬𝐡 allergy depends on diet habits:
As with fish, if you have reacted, but the tests are negative, think of 𝐀𝐧𝐢𝐬𝐚𝐤𝐢𝐬 allergy.
Remember, if you have reacted to 𝐜𝐫𝐮𝐬𝐭𝐚𝐜𝐞𝐚𝐧𝐬, you need to be tested for 𝐡𝐨𝐮𝐬𝐞 𝐝𝐮𝐬𝐭 𝐦𝐢𝐭𝐞𝐬!
Dr Costa is a Consultant Paediatrician and fellow of the Royal College of Paediatrics and Child Health.