Middle Ear Disorders
.Dysplasia means an abnormality in the development of an anatomical structure. These congenital anomalies can affect the outer, middle, and/or inner ear, and can occur alone or as part of syndromes. The major external ear anomalies are microtia and atresia, which often occur together. Microtia means an abnormally small pinna, Outer and middle ear anomalies produce a conductive hearing loss, provided the inner ear is not also affected. The degree of the conductive loss depends on the nature and extent of the abnormalities and is often ~ 60 dB . Abnormalities of the middle ear produce conductive hearing losses. The air-conduction level drops in direct relationship with the amount of attenuation produced by the disorder. Theoretically, bone conduction should be unchanged from normal unless the inner ear becomes involved.
Bullus Myringitis
Bullus myringitis is a very painful viral infection seen as inflamed, fluid-filled blebs or blister-like sacs on the tympanic membrane and nearby ear canal walls. It often occurs in association with upper respiratory infections as well as with otitis media. Very little hearing loss is associated with this condition. Bullus myringitis is usually self-limiting, and a thin fluid (perhaps with blood) is discharged when the blebsrupture. Antibiotics are often used to avoid secondary infections
Symptoms
- Severe ear pain that comes on suddenly.
- Fever.
- Poor appetite.
- Trouble sleeping.
- Hearing loss.
- Fluid draining from your ears.