Hi,Customer (name blocked for privacy),
Most probably airboorne allergens.They coud be seasonal which involves trees,grass,weed pollens etc.They could be perennial which involves dust mites, molds, pet danders etc.Antihistamins like Allegra can help.Sometimes it could be caused by post nasal drip.In that case to see an ear nose and throat specialist is useful.If sneezing spells persist you might need an allergy test to determine the allergen and getting treated accordingly.
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Edited by vyetimyan on February 4 2006 at 12:13 PM