| psychogenic deafness | Hearing loss without evidence of organic cause or malingering; often follows severe psychic shock. Synonym: functional deafness, hysterical deafness. (05 Mar 2000) |
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| sensorineural deafness | Hearing impairment due to disorders of the cochlear division of the 9th cranial nerve (auditory nerve), the cochlea, or the retrocochlear nerve tracts, as opposed to conductive deafness. (05 Mar 2000) |
| hysterical deafness | Hearing loss without evidence of organic cause or malingering; often follows severe psychic shock. Synonym: functional deafness, hysterical deafness. (05 Mar 2000) |
| nerve deafness | Neural deafness, former terms for sensorineural deafness. (05 Mar 2000) |
| noise-induced deafness | A type of sensorineural deafness caused by prolonged exposure to loud sounds, e.g., jet engines. (05 Mar 2000) |
| deafness | A condition in which the sense of hearing in both ears is not functional for ordinary purposes of life. The hearing level for speech is approximately 71 decibels I.s.o. (international organization for standardization) or 61 db a.s.a. (american standards association) or greater. (12 Dec 1998) |
| deafness, sudden | Sensorineural hearing loss which develops over a period of hours or a few days, varying in severity from mild to total. (12 Dec 1998) |
| industrial deafness | Synonym: acoustic trauma deafness. (05 Mar 2000) |
| occupational deafness | Sensorineural hearing loss due to overexposure to high intensity noise levels. Synonym: boilermaker's deafness, industrial deafness, occupational deafness. (05 Mar 2000) |
| organic deafness | Deafness due to a pathologic process or an organic aetiology, as opposed to psychogenic deafness. (05 Mar 2000) |
| low tone deafness | Inability to hear low notes or frequencies. (05 Mar 2000) |
| hearing loss, functional | Hearing loss without a physical basis. (12 Dec 1998) |
| orthodontic appliances, functional | Loose, usually removable intra-oral devices which alter the muscle forces against the teeth and craniofacial skeleton. These are dynamic appliances which depend on altered neuromuscular action to effect bony growth and occlusal development. They are usually used in mixed dentition to treat paediatric malocclusions. (ada, 1992) (12 Dec 1998) |
| functional | 1. Pertaining to, or connected with, a function or duty; official. 2. <physiology> Pertaining to the function of an organ or part, or to the functions in general. <medicine> Functional disease, a disease of which the symptoms cannot be referred to any appreciable lesion or change of structure; the derangement of an organ arising from a cause, often unknown, external to itself opposed to organic disease, in which the organ itself is affected. Source: Websters Dictionary (01 Mar 1998) |
| functional albuminuria | A collective term denoting types of benign albuminuria that are associated with physical exertion or other conditions in which there are physiologic changes such as during pregnancy or adolescence. Synonym: physiologic albuminuria. (05 Mar 2000) |