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.
Word History: The word barnacle is known from as far back as the early 13th century. At that time it did not refer to the crustacean, as it does today, but only to the species of waterfowl now more often known as the barnacle goose; more than 300 years went by before barnacle was used to refer to the crustacean. One might well wonder what the connection between these two creatures is.