For instance, if your baby inherited the tendency to be allergic to cat dander, he may have no trouble at all for the first few months he's around Fluffy. Add your comments to the bottom of this page. It takes some careful detective work and sometimes the help of medical tests to pinpoint the exact cause of an allergy. One clue may be when the allergy attacks occur. Mold allergies usually develop during rainy or damp weather and can be hard to distinguish from colds.
Dust mites or pet allergies often cause morning congestion that lasts all year long.
Pollen-related allergies are more common in spring and fall. If you have a strong suspicion that your baby is allergic to a particular thing, try to keep the offender away for a few days. If Fido seems like a good candidate, send him on a short vacation to a friend's house or the kennel. If your baby's symptoms calm down after these experiments, you've probably identified the problem. If your own sleuthing doesn't pan out, it's time to see your pediatrician.