A ƙarshen ƙarni na goma sha tara, likitan neurophysiologist Vladimir Bekhterev na Rasha a 1893, Adolph Strümpell na Jamus a 1897, da Pierre Marie na Faransa a 1898 sune na farko da suka ba da cikakkun bayanai waɗanda suka ba da izinin ganewar asali na AS kafin mummunan nakasawar kashin baya. Saboda wannan dalili, AS kuma an san shi da cutar Bekhterev, cutar Bechterew ko cutar Marie <unk> Strümpell. Tambaya: Wane yanayin kiwon lafiya suke ƙoƙarin samar da cikakkun bayanai?
AS