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  1. Deafness and hearing loss - World Health Organization (WHO)

    Feb 26, 2025 · Hearing loss may be mild, moderate, moderately severe, severe or profound. It can affect one ear or both ears and leads to difficulty in hearing conversational speech or loud …

  2. Deafness: Definition, Causes, Types, Symptoms & Treatments

    Nov 2, 2020 · Get an overview of deafness, including how doctors define deafness, as well as causes of deafness, different deafness types, and symptoms of deafness.

  3. Deafness and Hearing Loss: Types, Causes, and More - Health

    Apr 20, 2025 · Deafness or profound hearing loss is an auditory condition where a person can't hear anything or may only hear very loud sounds in one or both ears.

  4. Hearing loss - Symptoms and causes - Mayo Clinic

    Mar 30, 2023 · Symptoms of hearing loss may include: Muffling of speech and other sounds. Trouble understanding words, especially when in a crowd or a noisy place. Trouble hearing …

  5. Deafness - Wikipedia

    In a medical context, deafness is defined as a degree of hearing difficulties such that a person is unable to understand speech, even in the presence of amplification. [1]

  6. Deafness and hearing loss: Causes, symptoms, and treatments

    Apr 11, 2023 · Various factors can cause hearing loss, including physical damage to the ear, diseases, and long-term exposure to loud noises. Different types of hearing loss affect …

  7. Hearing Loss: Types, Symptoms, Causes & Treatment

    Hearing loss happens when something affects your hearing system. If you have hearing loss, you may have trouble understanding, following or participating in conversations. It may be hard for …

  8. Deafness, Types of Hearing Loss, and What Causes Each

    Sep 25, 2025 · Ability Central breaks down the different types of hearing loss and Deafness, how they differ, and what causes each.

  9. Deafness | hearing loss, hearing impairment, deaf culture | Britannica

    Sep 30, 2025 · deafness, partial or total inability to hear. The two principal types of deafness are conduction deafness and nerve deafness. In conduction deafness, there is interruption of the …

  10. Hearing Loss and Deafness - Treatment, Coping, and More

    Learn more about the condition and assistive devices that may be able to help you.