Clinical Study of Solifenacin Succinate in Patients With Bladder Symptoms Due to Spinal Cord Injury or Multiple Sclerosis

Inclusion Criteria: * Written informed consent has been obtained * Subjects with neurogenic detrusor overactivity due to: * Multiple sclerosis(MS)(EDSS≤8) or * Spinal cord injury(SCI)(partial or complete lesions) * MS or SCI symptoms should be stable for \>= 6 months * Neurogenic detrusor overactivity symptoms should be stable for \>= 6 months * Subject is willing and able to perform clean, intermittent, catheterization, if required * Subject is willing and able to take study medication in compliance with the protocol Exclusion Criteria: * Subjects with neurogenic detrusor overactivity due to Parkinson's or cerebrovascular disease * Subjects with Sjögren's Syndrome or any similar symptoms * Subjects with evidence of a symptomatic urinary tract infection, chronic inflammation such as interstitial cystitis, bladder stones, previous pelvic radiation therapy or previous or current malignant disease of the pelvic organs * Subjects with stress incontinence or mixed incontinence where stress is the predominant factor as determined by the investigator * Subjects with evidence of pressure sores \>= grade 2 * Subjects with a history of bladder sphincterotomy * Subjects with known history of vesico-ureteral reflux without upper urinary tract infection * Any clinically significant condition, which in the opinion of the investigator makes the subject unsuitable for the study or includes a history of acute urinary retention, severe gastrointestinal obstruction (including paralytic …