Anotia: Difference between revisions
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{{SI}}<br> | |||
{{Infobox medical condition | |||
| name = Anotia | |||
| image = [[File:Anotia_Illustration.jpg]] | |||
| caption = Illustration of Anotia | |||
| field = [[Otolaryngology]] | |||
| synonyms = Congenital absence of the ear | |||
| symptoms = Absence of the external ear | |||
| complications = Hearing loss | |||
| onset = Congenital | |||
| duration = Lifelong | |||
| causes = Genetic mutations, environmental factors | |||
| risks = Family history, maternal exposure to certain drugs or infections during pregnancy | |||
| diagnosis = [[Physical examination]], [[imaging studies]] | |||
| differential = [[Microtia]], other ear malformations | |||
| prevention = Prenatal care, avoiding teratogens | |||
| treatment = [[Reconstructive surgery]], [[hearing aids]] | |||
| prognosis = Variable, depends on associated conditions | |||
| frequency = Rare | |||
}} | |||
'''Anotia''' is a rare congenital condition where the external ear (''pinna'') is completely absent. It is often associated with other facial abnormalities and can occur as part of a syndrome or as an isolated defect. Anotia can be unilateral, affecting one ear, or bilateral, affecting both ears. | '''Anotia''' is a rare congenital condition where the external ear (''pinna'') is completely absent. It is often associated with other facial abnormalities and can occur as part of a syndrome or as an isolated defect. Anotia can be unilateral, affecting one ear, or bilateral, affecting both ears. | ||
[[File:Deprivation_Imbecile_A.jpg|Image of Deprivation Imbecile A|thumb|left]] | |||
==Causes== | ==Causes== | ||
The exact cause of anotia is unknown, but it is thought to be due to a combination of genetic and environmental factors. Some studies suggest that maternal exposure to certain medications or substances during pregnancy may increase the risk of anotia. These include retinoic acid, thalidomide, and certain antiepileptic drugs. However, more research is needed to confirm these findings. | The exact cause of anotia is unknown, but it is thought to be due to a combination of genetic and environmental factors. Some studies suggest that maternal exposure to certain medications or substances during pregnancy may increase the risk of anotia. These include retinoic acid, thalidomide, and certain antiepileptic drugs. However, more research is needed to confirm these findings. | ||
==Diagnosis== | ==Diagnosis== | ||
Anotia is usually diagnosed at birth through a physical examination. In some cases, it may be detected during a prenatal ultrasound. Other tests may be done to check for associated abnormalities or syndromes. These can include a hearing test, a CT scan or MRI of the head, and genetic testing. | Anotia is usually diagnosed at birth through a physical examination. In some cases, it may be detected during a prenatal ultrasound. Other tests may be done to check for associated abnormalities or syndromes. These can include a hearing test, a CT scan or MRI of the head, and genetic testing. | ||
==Treatment== | ==Treatment== | ||
The treatment for anotia depends on the severity of the condition and whether it is part of a syndrome. In some cases, reconstructive surgery may be done to create an external ear. This is usually done when the child is older and the facial bones have fully developed. If the child has hearing loss, a hearing aid or cochlear implant may be recommended. | The treatment for anotia depends on the severity of the condition and whether it is part of a syndrome. In some cases, reconstructive surgery may be done to create an external ear. This is usually done when the child is older and the facial bones have fully developed. If the child has hearing loss, a hearing aid or cochlear implant may be recommended. | ||
==Prognosis== | ==Prognosis== | ||
The prognosis for individuals with anotia varies. Some individuals may have normal hearing, while others may have hearing loss. The presence of other abnormalities or syndromes can also affect the prognosis. With appropriate treatment and support, most individuals with anotia can lead normal lives. | The prognosis for individuals with anotia varies. Some individuals may have normal hearing, while others may have hearing loss. The presence of other abnormalities or syndromes can also affect the prognosis. With appropriate treatment and support, most individuals with anotia can lead normal lives. | ||
==See also== | ==See also== | ||
* [[Microtia]] | * [[Microtia]] | ||
* [[Congenital anomalies of the ear]] | * [[Congenital anomalies of the ear]] | ||
* [[Hearing loss]] | * [[Hearing loss]] | ||
==References== | ==References== | ||
<references /> | <references /> | ||
[[Category:Congenital disorders]] | [[Category:Congenital disorders]] | ||
[[Category:Ear disorders]] | [[Category:Ear disorders]] | ||
[[Category:Rare diseases]] | [[Category:Rare diseases]] | ||
{{stub}} | {{stub}} | ||
Latest revision as of 14:01, 4 April 2025
Editor-In-Chief: Prab R Tumpati, MD
Obesity, Sleep & Internal medicine
Founder, WikiMD Wellnesspedia &
W8MD medical weight loss NYC and sleep center NYC
| Anotia | |
|---|---|
| |
| Synonyms | Congenital absence of the ear |
| Pronounce | N/A |
| Specialty | N/A |
| Symptoms | Absence of the external ear |
| Complications | Hearing loss |
| Onset | Congenital |
| Duration | Lifelong |
| Types | N/A |
| Causes | Genetic mutations, environmental factors |
| Risks | Family history, maternal exposure to certain drugs or infections during pregnancy |
| Diagnosis | Physical examination, imaging studies |
| Differential diagnosis | Microtia, other ear malformations |
| Prevention | Prenatal care, avoiding teratogens |
| Treatment | Reconstructive surgery, hearing aids |
| Medication | N/A |
| Prognosis | Variable, depends on associated conditions |
| Frequency | Rare |
| Deaths | N/A |
Anotia is a rare congenital condition where the external ear (pinna) is completely absent. It is often associated with other facial abnormalities and can occur as part of a syndrome or as an isolated defect. Anotia can be unilateral, affecting one ear, or bilateral, affecting both ears.
Causes[edit]
The exact cause of anotia is unknown, but it is thought to be due to a combination of genetic and environmental factors. Some studies suggest that maternal exposure to certain medications or substances during pregnancy may increase the risk of anotia. These include retinoic acid, thalidomide, and certain antiepileptic drugs. However, more research is needed to confirm these findings.
Diagnosis[edit]
Anotia is usually diagnosed at birth through a physical examination. In some cases, it may be detected during a prenatal ultrasound. Other tests may be done to check for associated abnormalities or syndromes. These can include a hearing test, a CT scan or MRI of the head, and genetic testing.
Treatment[edit]
The treatment for anotia depends on the severity of the condition and whether it is part of a syndrome. In some cases, reconstructive surgery may be done to create an external ear. This is usually done when the child is older and the facial bones have fully developed. If the child has hearing loss, a hearing aid or cochlear implant may be recommended.
Prognosis[edit]
The prognosis for individuals with anotia varies. Some individuals may have normal hearing, while others may have hearing loss. The presence of other abnormalities or syndromes can also affect the prognosis. With appropriate treatment and support, most individuals with anotia can lead normal lives.
See also[edit]
References[edit]
<references />
