Rett Syndrome ne a cututtukan da ba kasafai ba wanda ke rushe ci gaba da girma na kwakwalwa. Yana bayyana kanta a ciki jarirai da yara, kusan na musamman a tsakanin girls.

Yaro mai ciwon Rett yana nuna ci gaban al'ada a farkon rayuwarsa. Alamun farko sun bayyana tsakanin 6 da 18 watanni. Yara masu fama da cutar a hankali suna fuskantar matsaloli ƙungiyoyi, daidaito da kuma sadarwa wanda ke shafar iya magana, tafiya da amfani da hannayensu. Sannan muna magana akan polyhandicap.

Wani sabon rabe-rabe don rikice-rikice na ci gaba (PDD).

Ko da yake Rett ciwo ne a cututtukan kwayoyin halitta, yana daga cikin rikice-rikice masu tasowa (PDD). A cikin bugu na gaba (2013 mai zuwa) na Littafin Bincike da Ƙididdiga na Cutar Hauka (DSM-V), Ƙungiyar Ƙwararrun Ƙwararrun Ƙwararrun Amurka (APA) ta ba da shawarar sabon rabe don PDD. Za a haɗa nau'ikan nau'ikan Autism daban-daban zuwa nau'i ɗaya mai suna "Autism Spectrum Disorders". Don haka za a yi la'akari da ciwo na Rett a matsayin cututtukan da ba kasafai ake samun su ba.