answered Jan 27, 2010 at 08:26AM
Asthma , allergies, rhinitis ( nasal congestion and irritation of the nose), sinusitis, postnasal drips and colds , tend to go together. Sometimes, a nasal polyp ( a small, harmless growth in the nasal passageway) is present.
Allergy testing tests for common known allergens. So a normal allergy test does not mean that you do not have allergies.