Abstract
Food allergy was studied in 866 Finnish children aged 1, 2, 3 and 6 yr in the Helsinki [Finland] region. The diagnosis was based on history as well as on elimination and challenge performed at home concerning fish, citrus fruit and eggs. The prevalence of food allergy was 19% at 1 yr of age, increased to a peak of 27% at 3 yr and thereafter decreased to 8% at 6 yr of age. The most common allergenic foods were citrus fruit, tomato, eggs, strawberry and fish. A positive history of food allergy could be confirmed by challenge in about half of the cases in the younger age groups and in 100% at 6 yr of age. Food allergy is common in Finnish children.