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 .