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   Hearing Loss
Total or partial inability to hear sound in one or both ears.
Medical terms related to hearing loss :
Decreased hearing, Deafness, Loss of hearing
Common causes of hearing loss: 
o Ear Wax
o Age-related hearing loss (presbycusis)
o Scarred or perforated eardrum
o Noise Induced Hearing Loss (e.g. occupational hearing loss)
o Acoustic trauma
o Otitis Externa (Inflammation of the external auditory canal)
o Otitis Media
o mumps
o measles
o Scarlet fever
o Medications causing hearing loss:
Aminoglycoside antibiotics(e.g. Gentamycine, Amikacine), Aspirin(in high doses), Chloroquine, Quinidine
Meniere Disease:
A disorder of the membranous labyrinth of the inner ear causing recurrent attacks of dizziness, tinnitus, and hearing loss;called also Ménière's syndrome.

Other Causes of hearing loss:
o Meningitis
Acoustic neuroma:
A slow-growing tumor involving the Schwann cells of a vestibular nerve causing deafness, tinnitus, and disturbance of the sense of balance.
Alport Syndrome:
A usually X-linked inherited disease that is typically more severe in males, is marked by hematuria, hearing loss, abnormalities of the eye, and progressive renal failure, and is caused by defect in or absent of collagen.
o Autoimmune Hearing Loss
Cogan's Syndrome:
A rare rheumatic disease characterized by inflammation of the ears and eyes. Cogan's syndrome can lead to vision difficulty, hearing loss and dizziness.Cogan's syndrome most commonly occurs in a person's 20s or 30s.
o Head Trauma
o Congenital rubella syndrome
o Congenital atresia of the external auditory canal
o Congenital cytomegalovirus
o Congenital perilymphatic fistula
o Jervell & Lange-Nielsen Syndrome
Osteogenesis Imperfecta:
A hereditary disease causing a defect or deficiency in collagen production and charachterised by extreme brittleness of the long bones and a bluish color of the whites of the eyes;called also fragilitas ossium, osteopsathyrosis.
Waardenburg Syndrome:
An inherited genetic disorder marked by all, any, or none of deafness, a white forelock, widely spaced eyes, and heterochromia of the irises.
An inherited disorder characterized by brown spots on the skin, neurofibromas of peripheral nerves, and deformities of subcutaneous tissues and bone, Recklinghausen's disease.
Infectious disease caused by a sporozoan of the genus Toxoplasma (T. gondii) invading the tissues and may seriously damage the central nervous system especially of infants.
Usher Syndrome:
An inherited disease, autosomal recessive trait, marked by congenital deafness or progressive hearing loss during childhood and by retinitis pigmentosa.
Hurler syndrome:
Hurler syndrome is an inherited disease marked by skeleton deformities, hepatosplenomegaly, restricted joint flexibility, clouding of the cornea, mental retardation, and deafness; called also Hurler's disease.
o Leopard syndrome (multiple lentigines)
o Robinson type ectodermal dysplasia
o Cockayne syndrome
o Bjorn pili torti and deafness syndrome
o Multiple synostosis syndrome
o Hunter syndrome
o Hereditary nephritis
o Mohr syndrome
o Kartagener syndrome
o Fronto-metaphyseal dysplasia syndrome
o Morquio syndrome
o Stickler syndrome


Call your doctor if hearing loss is accompanied by: 
o Persistent and unexplained hearing problems
o Other symptoms like ear pain

Diagnostic tests that may be performed include: 
o Audiometry (an electronic hearing test)
o Auditory response test
o CT scan of the head (if a tumor or fracture is suspected)
o X-ray of the head
o Tympanometry
o Caloric test
o MRI of the ear (see MRI of the head)
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Diagnosis of hearing loss, Reasons of hearing loss, Prevention of hearing loss, Definition of hearing loss, Treatments for hearing loss

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