Deafness
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  Deafness



Deafness

    A general term for the complete or partial loss of the ability to hear from one or both ears. Deafness may result from ear diseases; vestibulocochlear nerve diseases; or brain diseases.

RELATED TERMS
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Ability
The ability to acquire general or special types of knowledge or skill.

Deafness
A general term for the complete or partial loss of the ability to hear from one or both ears. Deafness may result from ear diseases; vestibulocochlear nerve diseases; or brain diseases.

Diseases
A definite pathologic process with a characteristic set of signs and symptoms. It may affect the whole body or any of its parts, and its etiology, pathology, and prognosis may be known or unknown.

Nerve
Tissue that conveys sensation, temperature, position information to the brain.

Brain
"That part of the central nervous system that is located within the cranium (skull). The brain functions as the primary receiver, organizer and distributor of information for the body. It has two (right and left) halves called ""hemispheres."" "



SIMILAR TERMS
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Deaf
Persons with any degree of loss of hearing that has an impact on their activities of daily living or that requires special assistance or intervention.

Deaf Emergency Telewriter
The Deaf Emergency Telewriter is a hospital in Sayre, Pennsylvania, United States.

Deaf Mutism
A general term for the complete or partial loss of the ability to hear from one or both ears. Deafness may result from EAR DISEASES; VESTIBULOCOCHLEAR NERVE DISEASES; or BRAIN DISEASES.

Deaf-Mutism
A general term for the complete or partial loss of the ability to hear from one or both ears. Deafness may result from EAR DISEASES; VESTIBULOCOCHLEAR NERVE DISEASES; or BRAIN DISEASES.

Deafferentation Pain
A complex regional pain syndrome characterized by burning pain and marked sensitivity to touch (HYPERESTHESIA) in the distribution of an injured peripheral nerve. Autonomic dysfunction in the form of sudomotor (i.e., sympathetic innervation to sweat glands), vasomotor, and trophic skin changes may also occur. (Adams et al., Principles of Neurology, 6th ed, p1359)

Deafness and keratopachydermia
Congenital deafness with keratopachydermia and constrictions of fingers and toes.

Deafness, Acquired
A general term for the complete or partial loss of the ability to hear from one or both ears. Deafness may result from EAR DISEASES; VESTIBULOCOCHLEAR NERVE DISEASES; or BRAIN DISEASES.

Deafness, Bilateral
A general term for the complete or partial loss of the ability to hear from one or both ears. Deafness may result from EAR DISEASES; VESTIBULOCOCHLEAR NERVE DISEASES; or BRAIN DISEASES.

Deafness, Conductive
Hearing loss due to interference with the acoustic transmission of sound to the cochlea. The interference is in the outer or middle ear.

Deafness, congenital
Loss of hearing present at birth. Congenital deafness contrasts to acquired deafness which occurs after birth.

Deafness, Cortical
Hearing loss due to disease of the central nervous system auditory pathways, which originate in the cochlear nuclei of the pons and then ascend bilaterally to reach the inferior colliculi of the midbrain, medial geniculate bodies of the thalamus, and then the auditory cortices located in the temporal lobes. Bilateral lesions of the auditory pathways are usually required to cause central hearing loss. Cortical deafness refers to loss of hearing due to bilateral auditory cortex lesions. Unilateral brain stem lesions involving the cochlear nuclei may result in unilateral hearing loss.

Deafness, Partial
A condition in which the sense of hearing, although defective, is functional with or without a hearing aid. The hearing loss may affect one or both ears. The normal hearing level for speech is approximately 40-70 decibels I.S.O. (International Organization for Standardization) or 30-60 db A.S.A. (American Standards Association).

Deafness, Sudden
Sensorineural hearing loss which develops over a period of hours or a few days, varying in severity from mild to total.

Deafness, Unilateral
A general term for the complete or partial loss of the ability to hear from one or both ears. Deafness may result from EAR DISEASES; VESTIBULOCOCHLEAR NERVE DISEASES; or BRAIN DISEASES.

Deafnesses, Acquired
A general term for the complete or partial loss of the ability to hear from one or both ears. Deafness may result from EAR DISEASES; VESTIBULOCOCHLEAR NERVE DISEASES; or BRAIN DISEASES.

Deafnesses, Bilateral
A general term for the complete or partial loss of the ability to hear from one or both ears. Deafness may result from EAR DISEASES; VESTIBULOCOCHLEAR NERVE DISEASES; or BRAIN DISEASES.

Deafnesses, Unilateral
A general term for the complete or partial loss of the ability to hear from one or both ears. Deafness may result from EAR DISEASES; VESTIBULOCOCHLEAR NERVE DISEASES; or BRAIN DISEASES.



PREVIOUS AND NEXT TERMS
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Drusen
Amorphous, sub RPE material; probably the remains of the RPE as a result of atrophy. Associated, sometimes with aging and with ARMD. There may be no symptoms present in the early stages and may lead to a reduction in visual acuity later in life.

Diagnostic
Pertaining to a diagnosis; usually refers to a characteristic or criteria which is critical for a specific diagnosis.

Diagnosis
The determination of the presence of a specific disease or infection, usually accomplished by evaluating clinical symptoms and laboratory tests.

Diazepam
A tranquilizer.

Dental clinic
A clinic specialized in dental treatment.

Deafness

Diarrhea
Passage of excessively liquid or excessively frequent stools.

Drug treatment
A treatment with one or more drugs to fight a given condition or disease. Also, a treatment against drug addiction.

Dysphasia
A cognitive disorder marked by an impaired ability to comprehend or express language in its written or spoken form. This condition is caused by diseases which affect the language areas of the dominant hemisphere. Clinical features are used to classify the various subtypes of this condition. General categories include receptive, expressive, and mixed forms of aphasia.

Drug treatment center
A specific center, clinic or institution where drug addiction patients are treated against their addiction.

Depression treatment
A combination of several medical actions, interventions and prescriptions aimed at tackling a patient's depression condition.

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