Cogan's syndrome refers to a particular
combination of ophthalmic and other conditions affecting a person. It
is a rare disorder in which
are associated with
- vertigo and
- bilateral sensorineural deafness.
One recent theory is that Cogan's syndrome is an autoimmune
This idea explains the inflammation in the eye and ear as due to the patient's
own immune system producing antibodies that attack the inner ear and eye
tissue. However, there have also been suggestions that Cogan's
syndrome may be initiated by a bacterial infection (specifically
chlamydia pneumoniae) - though Cogan's syndrome
does not result from all infections with this bacteria, and fortunately
remains a rare condition.
Cogan's syndrome is named after the American
Ophthalmologist, David Glendenning Cogan (1908 - 1993).
More about Ophthalmology: This section includes short definitions
of many diseases, disorders, and conditions of the eyes and visual system.
For definitions of other terms in this category, choose from the list
to the left (but note that this is not a complete/exhaustive list).
Other related pages include the diagram
of the eye, and definitions
of parts of the eye, a description
of the human retina, and definitions
of parts of the retina, and the section of short definitions
of clinical and surgical procedures re. eyes and human visual system.
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