I just went inside after being outside for a few minutes. My head is spinning & won't stop. I have seasonal allergies but never have been dizzy? Help?

Eustachian tube. dysfunction. Allergies increse the secretions in nasopharynx and floods eustachian tubes with secretion, inflames the orifices of the eustacian tubes causing blockage so eustachian tubes can not clear the secretions . This raise the pressure inside the ear causing, dizziness, tinnitus, pain and some hearing impairment. Try otc antihistamin such as zyrtec, allegra or claritin (loratadine) for few days .