[Reactivity of the skin to the most common allergens in children aged 0-3 years with obstructive bronchitis].

Prick tests were carried out in 84 children aged 4-34 months with obstructive chronic bronchitis. Three children reacted to negative control. All tested children reacted with a blister to positive control (0.1% histamine solution, 5% solution of codeine). Positive prick tests were found in 33 children (40.7%). Most often the children reacted to egg (16%), feathers and house mite--Dermatophagoides pteronyssinus (13.6%), dust and cereals allergens (11.1%). In all positive reactive children elevated serum IgE levels were seen. In this group of children there were more breast fed children for longer than 1 month and children with more than 11 respiratory tract infections. In the positive prick test group the first spastic reaction++ was observed in older children than in the negative test group. The authors demonstrated the usefulness of prick tests in diagnosis of allergic diseases in the youngest children.