There was closed relation between asthma and allergic rhinitis and eczema. There was a higher prevalence of asthma among children who had allergic rhinitis and eczema.
Có mối liên quan giữa hen, viêm mũi dị ứng và chàm, trẻ dễ bị hen nếu trẻ có viêm mũi dị ứng và chàm.