The more dust, the more dust mites. If parts of your house are damp, look into a dehumidifier. This will kill any dust mites living in the bedding. These devices will remove even microscopic allergens from the air circulating in your house. Do not allow smoking anywhere in your house.
Outdoor allergens are harder to control, of course.
We welcome your comments and questions. If you have specific questions about your child you must ask your child's regular doctor. No doctor can give completely accurate advice about a particular child without knowing and examining that child. I will be happy to try and answer general questions about children's health, but unless your child is a regular patient of mine I cannot give you specific advice. M.D. All rights reserved.