<prompt> Fingqa isihloko: Lapho evuka ekuseni ngolunye usuku, uLeesa Barrell washaqeka lapho ethola ukuthi konke kwakubonakala kuhluke kakhulu. Kwakungathi kukhona umuntu obeke udonga lwezitini ngakwesokudla sami, esho. Ngambiza umyeni wami u-Lee futhi lapho ephendula ngezwa izwi lakhe kuphela endlebeni yami yesobunxele. ULeesa Barrell osesithombeni wavuka ngelinye ilanga ekuseni engenakuzwa endlebeni yakhe yangakwesokudla. Ekuqaleni, uLeesa, oneminyaka engu-45 ubudala, ohlala eNorwich noLee, oneminyaka engu-49 ubudala, ongumnakekeli wesikole, nendodana yabo uAshlee, oneminyaka engu-12, bacabanga ukuthi inkinga cishe ibangelwa ukuvaleka kwe-wax futhi yayiyozilungisa ngezinsuku ezimbalwa. Kodwa kwathi lapho ingasebenzi, ngemva kwesonto izimpawu zokuqala ziqale ukubonakala, waya kudokotela wakhe wendawo futhi wathunyelwa kudokotela wezindlebe, ikhala nomphimbo. Uchwepheshe waphonsa ibhomu - wayesephelelwe ukuzwa endlebeni yakhe yangakwesokudla, mhlawumbe unomphela. Ngaleso sikhathi ngaqala ukukhala kakhulu. Uthi: Ngangikhathazeke kakhulu ngokuthi ukuzwa kwami ngeke kuphinde kubuye. ULeesa, umsizi wesazi sezimali, wacindezeleka nakakhulu lapho odokotela bengakwazi ukuchaza ukuthi kungani lokhu kwenzekile. ULeesa ungomunye wabantu abadala abangaba ngu-6.000 ngonyaka abalinganiselwa ekuthuthukiseni ukulahleka kokuzwa okungazelelwe kwe-sensorineural, noma ukulahleka kokuzwa okungachazeki, okuvame ukuvela ngokuzumayo, noma kungakapheli izinsuku ezintathu, ngokuvamile endlebeni eyodwa. Ngokuvamile, ukulahleka kokuzwa okungazelelwe kungabangelwa izifo ezithathelwanayo, imithi ethile, ukulimala ekhanda kanye nemenenja, ngoba konke lokhu kungathinta indlebe yangaphakathi. Kodwa kwezinye izimo, njengezikaLeesa, ayikho incazelo ecacile. Isitho sokuzwa, i - cochlea, sitholakala ekujuleni kwendlebe yangaphakathi. Ugcwala uketshezi - lapho kufika amaza omsindo kulo, uketshezi luyahamba bese amangqamuzana ezinwele amancane aqala ukudlulisela imiyalezo ebuchosheni bokuzwa, obudlulisela imiyalezo ebuchosheni. Lezi zibonakala njengomsindo, okusenza sikwazi ukuzwa. Ukulahleka kokuzwa kwe-sensorineural kubangelwa izinkinga ezindlebeni zangaphakathi noma ezinzwa. Olunye uhlobo - ukulahleka kokuzwa okuhambisa umsindo - lwenzeka lapho okuthile kuvimbe ngokwenyama ukudluliswa komsindo, njengoswayi. Amaphesenti angu-85 esikhathi akekho owaziyo ukuthi kungani ukulahleka kokuzwa okuzumayo kwenzeka ngoba thina...  <response>: Ngolunye usuku ekuseni, uLeesa Barrell wavuka engenakuzwa endlebeni yakhe yangakwesokudla. Ekuqaleni wacabanga ukuthi kwakungenxa yokwakheka kwe-earwax eyayizosuka ngokushesha. Lapho engasakwazi ukuzwa ngemva kwesonto wanikwa amaphilisi e-steroid. Uyitholile amaphesenti angu-50 yokuzwa kwakhe kodwa udinga ukufakwa izinsiza-kuzwa. 