Conductive hearing loss is a type of hearing loss that occurs when sound is not conducted efficiently through the outer ear, middle ear, or both. This can be caused by a variety of factors, including blockages in the ear canal, damage to the eardrum, or abnormalities in the middle ear bones.

Some common causes of conductive hearing loss include:

1. Earwax buildup: Excessive earwax can block the ear canal and prevent sound from reaching the middle ear.
2. Middle ear infections: Infections in the middle ear can cause fluid buildup, which can interfere with the movement of the middle ear bones and result in conductive hearing loss.
3. Eardrum perforation: A perforated eardrum, which can be caused by injury or infection, can affect the transmission of sound to the middle ear.
4. Otosclerosis: This is a condition in which the middle ear bones become stiff and are unable to conduct sound properly.
5. Malformation of the outer or middle ear: Certain congenital conditions or birth defects can cause abnormalities in the outer or middle ear that interfere with sound transmission.

Treatment for conductive hearing loss depends on the underlying cause of the condition. In some cases, the hearing loss may be temporary and resolve on its own. In other cases, medical treatment such as antibiotics or surgical intervention may be necessary to address the underlying cause. Hearing aids or other assistive devices may also be prescribed to improve hearing ability.

It is important to seek medical attention if you experience symptoms of hearing loss, as early intervention can improve treatment outcomes and prevent further hearing loss.