I was dxd with RRMS in '98;dxd with Central Sleep Apnea in '99 .I have had four sleep studies , been tested with CPAP & BiPAP with different concentrations , auto devices ,etc. ; all to no avail. Apparantly , the apnea is a symptom of the MS (Rare). I have had three different sleep doctors ; none have found a solution . It seems as if the sale of a breathing apparatus , effective or not , is the primary goal of these physicians . I have found no info on MS & Sleep Apnea ; Very little info on Central Sleep Apnea . Any input would be appreciated .