This condition is called as Tinnitus. It comes due to the damage to the microscopic endings of the hearing nerve in the inner ear. It can be due to these causes-Allergy, high or low blood pressure , a tumor, diabetes, thyroid problems,Medications like anti-inflammatory, antibiotics, sedatives, antidepressants, and aspirin can be the reason. You may be requiring X-ray, Balance test,Lab work .My advice is to consult otolaryngologist for clinical examination .
It may be due to middle ear fluid or any inflammation or infection related to ear. Pollen allergy doesnot cause any ear disorder. please see otolaryngologist for clinical examination.
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