Hearing Loss
When hearing becomes unclear or reduced — understanding causes and when to seek care
Medically reviewed by a board-certified ENT specialist
- Author:
- Dr. Poj Pinyopornpanish — Otolaryngologist · Thai Board of Otolaryngology
- Medical reviewer:
- Dr. Poj Pinyopornpanish — Otolaryngologist · Thai Board of Otolaryngology
- Reviewed on:
- Last updated:
- Estimated reading time: 5 min
Overview
What is hearing loss?
Hearing loss means hearing is less clear or quieter than normal. It may develop gradually or suddenly, in one ear or both. Causes include problems with sound conduction through the outer or middle ear (conductive), damage to the inner ear or hearing nerve (sensorineural), or a combination of both. A clinical assessment helps identify the cause and appropriate care. Some types of hearing loss may improve if the underlying cause is treated in time, but outcomes vary between individuals.
Symptoms
Common symptoms
Symptoms depend on the cause, severity, and whether one or both ears are affected. They may overlap with other ear conditions.
Muffled hearing or reduced loudness
Needing people to repeat themselves or turning up the TV or radio
Difficulty hearing in noisy environments
A feeling of fullness or blockage in the ear
Ringing or other sounds in the ear (tinnitus)
Dizziness (in some cases)
Ear pain or discharge (when infection or outer/middle ear disease is present)
Sudden hearing loss in one ear (requires urgent assessment)
Possible causes
Why hearing may change
Hearing loss has many possible causes. Some are treatable; others require long-term management.
Impacted earwax
Wax blocking the canal can cause temporary hearing reduction, often improving once wax is removed.
Ear infection or inflammation
Middle ear infections or inflammation in the ear canal can affect how sound is conducted.
Noise exposure
Prolonged loud noise or a single very loud event can damage the inner ear, especially without hearing protection.
Age-related change
Presbycusis is a gradual, common form of hearing change in older adults.
Certain medications
Some medicines may affect hearing. Tell your doctor if you suspect a medication is involved.
Other conditions
Examples include inner ear disorders, Ménière's disease, middle ear problems, or neurological causes. Clinical assessment helps distinguish these.
When to seek care
When should I see an ENT specialist?
Some patterns of hearing loss need prompt assessment. Seek care if warning signs appear or daily communication is affected.
Sudden hearing loss in one or both ears (urgent assessment)
Gradually worsening hearing that affects communication
Tinnitus, ear fullness, or dizziness alongside hearing changes
Ear pain, discharge, bleeding, or fever
Hearing loss after head or ear injury
Hearing changes after starting a new medication
A child who speaks late, does not respond to sound, or seems not to hear well
Facial weakness or other neurological symptoms
Diagnosis
How is it diagnosed?
Your doctor will ask about symptoms, timing, whether one or both ears are affected, and relevant factors such as noise exposure, medications, or recent infection. The ear is examined with an otoscope, and hearing tests (audiometry) may be performed to measure sensitivity to sound and the type of hearing loss. When needed, further tests such as imaging of the inner ear or assessment by an audiologist may be arranged as appropriate.
Treatment
Treatment options
Treatment depends on the cause, type, and severity. The most suitable approach is chosen after clinical assessment.
Treating reversible causes
Examples include removing impacted wax, treating middle ear infection, or addressing blockages in the canal. Hearing may improve once the cause is managed.
Medication
In selected cases, such as sudden hearing loss, doctors may consider medication according to clinical guidelines. Use only as prescribed.
Hearing aids
When hearing cannot be fully restored, hearing aids may amplify sound and improve daily communication. Fitting and adjustment should involve a qualified professional.
Rehabilitation and communication support
This may include listening strategies, communication techniques, or assistive devices such as loop systems when appropriate.
Surgery
For some middle or inner ear conditions, surgery may be considered based on specialist assessment.
Self-care
What you can do at home
Self-care focuses on preventing further damage and improving communication day to day.
Avoid loud noise and use hearing protection when needed
Do not insert objects into the ear canal
Face the speaker and ensure good lighting when conversing
Reduce background noise when listening or talking
Tell your doctor if you suspect a medicine is affecting your hearing
If advised, use hearing aids consistently and follow maintenance guidance
Return for assessment if symptoms change or worsen
Prevention
Reducing the risk of hearing loss
Not all hearing loss can be prevented, but noise-related risk can be reduced with sensible habits.
Limit exposure to loud noise and use earplugs or earmuffs in noisy settings
Keep personal audio at safe levels and take listening breaks
Complete treatment for ear infections as advised
Avoid putting objects in the ear canal
Have hearing checked when recommended, especially with risk factors or increasing age
Seek prompt assessment for new ear symptoms, especially sudden hearing loss
FAQ
Frequently asked questions
Common questions about hearing loss, assessment, and hearing support options.
What is the difference between temporary and permanent hearing loss?
Temporary loss may result from wax impaction, infection, or pressure changes and sometimes improves when the cause resolves. Permanent loss often involves inner ear or nerve damage and may require hearing aids or other support. Clinical assessment helps determine the type.
Why is sudden hearing loss urgent?
Sudden hearing loss can have several causes. In some cases, early treatment may be beneficial. Prompt assessment helps identify the cause and consider timely care.
Do hearing aids really help?
Hearing aids amplify sound and can improve communication for many people, but they do not restore normal hearing for everyone. Benefit depends on the type and severity of loss, as well as fitting and consistent use.
Is tinnitus linked to hearing loss?
Tinnitus often occurs alongside hearing loss but is a separate symptom. Evaluating hearing and other causes helps plan appropriate care.
Can children have hearing loss?
Yes. Hearing loss in children can affect speech and learning. If you suspect a child is not hearing well, seek assessment by a doctor or audiologist.
References
Related guidelines and patient resources
The sources below are recognized international guidelines and patient-education resources for general learning. They are not individualized medical advice.
Patient information on ear and hearing conditions
AAO-HNS / ENThealth
View source (AAO-HNS / ENThealth)Patient education and clinical guidance in otolaryngology
American Academy of Otolaryngology–Head and Neck Surgery (AAO-HNS)
View source (American Academy of Otolaryngology–Head and Neck Surgery (AAO-HNS))Public ENT health information
ENThealth (AAO-HNS Foundation)
View source (ENThealth (AAO-HNS Foundation))
Educational information
Medical Disclaimer
This information is intended for educational purposes only and does not replace diagnosis or treatment by a qualified physician. If you have concerning symptoms, please consult an ENT specialist.
Related links
Learn more
Related clinic pages to help you explore conditions, services, and procedures.
Hearing changes or sounds unclear?
An assessment can help identify the cause, type of hearing loss, and care options that may be appropriate for you.