For those triggers that cannot be avoided, you can try to compensate with extra care in other ways. For example, when your child has a cold, you can try to ensure he gets lots of sleep and nutritious foods. Some triggers may become more of an issue as your child gets older.
barnacle. n. 1. (Animals) any of various marine crustaceans of the subclass Cirripedia that, as adults, live attached to rocks, ship bottoms, etc. They have feathery food-catching cirri protruding from a hard shell. See acorn barnacle, goose barnacle.
Barnacles taste familiar, and if you can get over how strange and unappealing a plate of them can look, you may also come to understand why the Spanish love them so. The rock barnacle, or picoroco, lives in a shell that looks like a miniature volcano. It tastes like crab to me, like scallops to others. Gooseneck barnacles, or percebes, are similar in texture to octopus or the neck of the soft-shell clam. To me they taste intensely of the sea.