As flu season peaks, many people are experiencing symptoms such as sore throat, runny nose, and fever.

Some users of Chosgo hearing aids have reported a perceived deterioration in their hearing after catching a cold, wondering if their hearing aids are the culprit.

But it may not necessarily be a fault with the hearing aids. Changes in hearing after a cold could be attributed to several reasons.

Blocked Eustachian Tube

To understand the issue of a blocked Eustachian tube, let's delve into the structure of the ear.

The human ear comprises three parts: inner, middle, and outer. In the middle ear, the Eustachian tube is not completely sealed; it has a "secret passage" connecting it to the outside world, known as the Eustachian tube.

The primary function of the Eustachian tube is to balance the pressure inside and outside the middle ear. It achieves this by regulating the pressure in the middle ear and draining secretions.

Under normal circumstances, the middle ear maintains almost equal pressure with the outside air through the Eustachian tube, aligned with atmospheric pressure. However, during a cold, nasal congestion can lead to a blocked or congested Eustachian tube, causing an imbalance in the pressure inside and outside the middle ear. This can affect the normal transmission of sound energy through the eardrum, temporarily lowering the hearing threshold, resulting in a perceived decrease in hearing ability.

Impacted by Cold-Related Inflammation

The Eustachian tube plays a crucial role in connecting the middle ear with the nose and throat. When you have a cold, the inflammation from upper respiratory tract infection or viruses and bacteria in the nose and throat may spread through the Eustachian tube to the middle ear, causing secondary inflammation or fluid accumulation in the middle ear.

Without timely treatment, this middle ear inflammation can lead to changes in hearing.

Ototoxic Drugs

According to the World Health Organization's World Hearing Report, there are currently over 600 drugs that may have ototoxic effects. Common culprits include:

• Aminoglycoside and macrolide antibiotics (such as gentamicin, erythromycin) • Quinine antimalarial drugs (quinine) • Platinum-based anticancer drugs (such as cisplatin) • Loop diuretics (such as furosemide, acetylsalicylic acid)

However, it's not a guarantee that taking these drugs will lead to hearing loss. Individual factors, such as personal health history and dosage, also play a role. Therefore, when seeking medical attention for a cold, it's essential to provide the doctor with information about family medical history, personal allergies, or any drug contraindications.

In most cases, as the cold resolves, hearing tends to improve. However, if hearing doesn't noticeably recover after recovering from a cold, we recommend visiting a fitting center for a hearing checkup and adjustments to your Chosgo hearing aids.

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