Hi doctor.My son is 6 months old. When I change the Atmosphere from hall to room he is sneezing a little..In room also I have kept all well closed.What is the reason?

A. Indoor allergens like mold, dust mites and pet dander are common causes of allergy symptoms in children year-round. If you're having trouble figuring out the root cause of your child's symptoms, an allergist can help identify what allergens trigger flare-ups and the best method of treatment.