Causes
Explain that many factors can lead to glue ear, including colds and flu, allergies, and passive smoking. It is commonly, but not always, associated with ear infections.
Glue ear occurs when the middle ear (the area behind the eardrum) becomes filled with sticky fluid. This area is usually clear and has a small pocket of air which allows sound to travel through into the rest of your ear, allowing you to hear clearly. It is very common in children – 8 in 10 children will get glue ear before the age of 10. However, it can also occur in adults.
The causes of glue ear are wide and varied. It is commonly associated with ear infections but that’s not the only cause. Glue ear is not caused by a build-up of earwax, or by getting water in the ear after swimming or showering.
The common causes of glue ear include:
- Eustachian tube dysfunction – The Eustachian tube is a narrow tube that runs from your middle ear to the back of your throat. It helps to drain mucus and debris away from the inner ear and helps to maintain a normal pressure in your ear (which is why chewing or sucking sweets on a plane can help reduce ear pain.) If your eustachian tube stops working as it should, it can cause a build-up of fluid and debris, causing glue ear.
- Infections – previous ear infections can reduce the efficiency of the eustachian tube which can lead to a buildup of fluid in the middle ear, causing glue ear. Additionally, residual fluid in the middle ear left over from infections can also cause a bout of glue ear.
- Allergies – allergies can lead to an increase of mucus production and are another potential cause of glue ear.
Anatomical factors – if you have a narrower than normal eustachian tube or nasal polyps, these can make you more prone to repeated glue ear complications.
- Environmental factors – if you grew up in a home where the adults smoked, this can cause irritation that can lead to glue ear.
- Cleft palate – those born with a cleft palate are more susceptible to glue ear as they have a narrower than normal eustachian tube which can prevent thorough drainage of music and debris away from the middle ear.
- Family history – If members of your family are susceptible to bouts of glue ear, you may also be more prone.
- Health conditions – Some serious health conditions such as vasculitis or nasopharyngeal cancer can also lead to glue ear, typically in adults.