IGHE and allergic disease: His respiratory symptoms started in preschool, then he developed allergy to HDM, cat and dog (SPT mean wheal diameter DP 4 mm, DF 3 mm, cat 4 mm, dog 5 mm, sIgE DP 1.18 KU/L, DF 1.12 KU/L, cat 1 KU/L, dog 5.36 KU/L, with total IgE 597 IU/mL).