Deafness

Sensorineural hearing loss (SNHL) is a type of hearing loss, or deafness, in which the root cause lies in the inner ear or sensory organ (cochlea and associated structures) or the vestibulocochlear nerve (cranial nerve VIII) or neural part.

Pendred syndrome or Pendred disease is a genetic disorder leading to congenital bilateral (both sides) sensorineural hearing loss and goitre with euthyroid or mild hypothyroidism (decreased thyroid gland function).

Wolfram syndrome, also called DIDMOAD (diabetes insipidus, diabetes mellitus, optic atrophy, and deafness), is a rare autosomal-recessive genetic disorder that causes childhood-onset diabetes mellitus, optic atrophy, and deafness as well as various other possible disorders.

Diabetes mellitus and deafness (DAD) or maternally inherited diabetes and deafness (MIDD) is a subtype of diabetes which is caused from a point mutation at position 3243 in human mitochondrial DNA, which consists of a circular genome.

Hearing loss, also known as hearing impairment, is a partial or total inability to hear.

A sign language (also signed language) is a language which chiefly uses manual communication to convey meaning, as opposed to acoustically conveyed sound patterns.

In Deaf culture and sign language, a sign name (or a name sign) is a special sign that is used to uniquely identify a person, just like a name.

Usher syndrome is an extremely rare genetic disorder caused by a mutation in any one of at least 11 genes resulting in a combination of hearing loss and visual impairment, and is a leading cause of deafblindness.

Conductive hearing loss occurs when there is a problem conducting sound waves anywhere along the route through the outer ear, tympanic membrane (eardrum), or middle ear (ossicles).

Blissymbols or Blissymbolics was conceived as an ideographic writing system called Semantography consisting of several hundred basic symbols, each representing a concept, which can be composed together to generate new symbols that represent new concepts.

Philippine Sign Language, or Filipino Sign Language (FSL), is the national deaf sign language of the Philippines.

Presbycusis (also spelled presbyacusis, from Greek presbys “old” + akousis “hearing”), or age-related hearing loss, is the cumulative effect of aging on hearing.

Northern Ireland Sign language (NISL) is a sign language used mainly by Deaf people in Northern Ireland.

Cortical deafness is a rare form of sensorineural hearing loss caused by damage to the primary auditory cortex.

A video relay service (VRS), also sometimes known as a video interpreting service (VIS), is a video telecommunication service that allows deaf, hard-of-hearing and speech-impaired (D-HOH-SI) individuals to communicate over video telephones and similar technologies with hearing people in real-time, via a sign language interpreter.

Cogan syndrome is a rare disorder characterized by recurrent inflammation of the front of the eye (the cornea) and often fever, fatigue, and weight loss, episodes of dizziness, and hearing loss.

Various models of deafness are rooted in either the social or biological sciences.

The history of deaf education in the United States began in the early 1800s, when the Cobbs School, an oral school, was established by William Bolling and John Braidwood, and the Connecticut Asylum for the Deaf and Dumb, a manual school, was established by Thomas Hopkins Gallaudet and Laurent Clerc.

A Deaf American is defined as a member of the American Sign Language linguistic minority.

Audism is the notion that one is superior based on one's ability to hear or to behave in the manner of one who hears, or that life without hearing is futile and miserable, or an attitude based on pathological thinking which results in a negative stigma toward anyone who does not hear.

Visible Speech is a system of phonetic symbols developed by Alexander Melville Bell in 1867 to represent the position of the speech organs in articulating sounds.