Narcolepsyisaneurologicaldisorderwhosemainsymptomisexcessive,overridingsleepiness.Avictimcanfallasleepanytime,anywhere,eveninthemostcircumstances.Andthereisnocure.“Havingnarcolepsy,”saysBill,“islikealwaysbeingassleepyasanormalpersonmightbeafterstayingawakethreedays.” ItisestimatedthataquartermillionAmericanshavenarcolepsy,mostlyundiagnosed.Thisisbecause,inaphysicalexam,adoctormaynotfindanythingwrongwithanarcolepticperson.Itmaytakeyears,andvisitstoseveraldoctors,beforeanarcolepticdiscoversthenameofhisproblem.Researchersnowbelievethatthediseaseistriggeredbyachemicalimbalanceinthepartofthebrainthatcontrolswakefulness.Initialsymptomsmayalsoincludeasuddenlossifmuscletonebroughtonbyanintenseemotion--anythingfromangertolaughter.Somenarcolepticshallucinateordevelopsleepparalysis,whichisthefeelingduringthelighterstagesofsleepofbeingcompletelyunabletomoveortalk.Theprognosisforapatientwithnarcolepsyisn’tgood.Narcolepticshavethediseasealltheirlives,andmanycannotholddownajoborleadanormallife.SomenarcolepticstakedailydosesofprescribeddrugslikeDexedrine--”uppers”--tostayawakeloneenoughtofunction.Theproblemofnarcolepsyisbeingstudiednow,andsomedaytheremaybeacure.Butcurrentsufferersmustendureanexistence,thatis,asonewomansaid,“likewalkingthroughglue.” Theauthorisprimarilyconcernedwith_____.
A.narcolepsy is a serious disease with no cure now B.narcolepsy is hilarious C.narcolepsy is mostly undiagnosed D.narcoleptics are common people who like sleeping正确答案A
