You only know that pollen is allergic. Don’t you know that hearing is allergic too?

In addition, when patients with hearing loss or gradual decline have hearing hypersensitivity, they can useHearing aid, Which helps to improve the hearing threshold while filtering and masking some noise in the environment.

Link:      You only know that pollen is allergic. Don't you know that hearing is allergic too?

REF: Hearing AidsHearing Aids TypesDigital Hearing Aids
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