Hearing loss can occur for different reasons and may affect various parts of the hearing system. Based on the location and cause of the problem, hearing loss is classified into several types.

Conductive Hearing Loss

Conductive hearing loss happens when sound is unable to travel properly through the outer or middle ear to reach the inner ear. This may occur due to:

• Earwax blockage
• Ear infections
• Fluid buildup in the middle ear
• A damaged eardrum
• Structural problems within the ear

In many cases, conductive hearing loss can be treated medically or surgically.

Sensorineural Hearing Loss

This is the most common form of hearing loss and occurs when there is damage to the inner ear (cochlea) or the auditory nerve pathways. Common causes include:

• Age-related hearing changes
• Long-term exposure to loud noise
• Genetic factors
• Certain medications
• Head injuries
• Illnesses such as meningitis or Ménière’s disease

Sensorineural hearing loss is usually permanent, but hearing aids or other hearing devices may help improve communication.

Mixed Hearing Loss

Mixed hearing loss is a combination of conductive and sensorineural hearing loss. This means there is damage in both the outer or middle ear as well as the inner ear or auditory nerve.

Neural Hearing Loss

Also known as auditory neuropathy, neural hearing loss occurs when the inner ear receives sound normally, but the auditory nerve does not transmit signals effectively to the brain. This condition may be present from birth or develop later due to:

• Premature birth
• Genetic conditions
• Neurological disorders
• Other medical complications

Central Hearing Loss

Central hearing loss is linked to problems within the brain’s hearing centres or auditory pathways. Even when the ears function normally, the brain may have difficulty processing sounds correctly. Causes can include:

• Stroke
• Brain injury
• Tumours
• Neurological disorders

Functional Hearing Loss

Functional hearing loss refers to hearing difficulties that occur without any detectable physical damage to the hearing system. It is often associated with emotional or psychological factors rather than structural issues in the ear.

Severity of Hearing Loss

Hearing loss can range from mild to profound depending on the extent of hearing difficulty. Early diagnosis and treatment are important to improve communication and overall quality of life.

If you notice signs of hearing difficulty, it is advisable to consult an audiologist or an ENT specialist for a complete hearing evaluation and proper guidance.