Dehiscence syndrome superior semicircular canal or DCSS
In ENT exists within the inner ear disease whose symptoms, vertigo, tinnitus and hearing loss, may induce the specialist, mistakenly to make diagnosis of Meniere's Syndrome.
The DCSS is a clinical entity characterized by the presence of a structural alteration of the superior semicircular canal (CSS) responsible for a wide variety of signs and symptoms of vestibular stimulation in conjunction intense sound (Tullio phenomenon) or stimulation of pressor not sound middle-ear or the cranial cavity (phenomenon Hennebert). The DCSS is the so-called "third window mobile", for which all the mechanical stimulation sound and / or pressor generally capable of activating the auger induce endolymphatic also flows inside the CSS, generating the onset of symptoms of dizziness
Because of the lack of bone wall of the capsule labyrinthine symptoms may occur only vestibular (dizziness, feeling of instability after patient exposure to loud sounds, after physical exertion or after pressure on the external ear canal) since the mechanical stimulation exerted on the vestibular receptors may determining a state of imbalance chronic exclusively cochlear (hearing loss, autophony, tinnitus, muffled headset, hyperacusis) or clocleo-vestibular.
The clinical manifestations of the disease may be different, and this may depend on the extent of the defect and the degree of functional impairment of the membranous semicircular canal. This disease may be due to alterations that occur during postnatal bone development, but is clinically manifested usually in adulthood, following, for example, of a trauma. Scientists can not exclude the genetic predisposition to the development of diseases and disorders of the vestibular patients with DCSS, this would also explain the existence of multiple dehiscence of the semicircular canals, clinical entities recently discovered.
When symptoms are not particularly debilitating treatment of choice is the affixing of trans-tympanic drainage to reduce the movement of the tympanic membrane and ossicular chain and to reduce the pressure in the middle ear. It also invites the patient to avoid physical exertion, lifting, rigging compensation, diving, loud noises, pressure changes during air and can be prescribed in some cases benzodiazepines.
In conclusion all the patients that come to refer to the observation dell'otorinolaringoiatra dizzy syndrome in the presence of hearing loss and / or tinnitus or patients who have been diagnosed with Meniere's Syndrome should be subjected to diagnostic protocol for the semicircular canal dehiscence syndrome top, to recommend appropriate therapy and improve the quality of their lives.
Sorry for my poor english
Best wishes