Diagnosis of Multiple Sclerosis (MS) based on the McDonald criteria
Patient Determined Disease Steps (PDDS) score of 1-5 (ambulatory participants)
Ability to communicate in written and spoken English
Age 18-80 years
Chronic lower-extremity pain lasting more than three consecutive months, with a pain intensity of at least 3 out of 10 on the Numeric Pain Rating Scale (NPRS)
You may not be if
Any neurological comorbidity (e.g., stroke or Parkinson's disease)
MS relapse within the past 30 days
Current participation in or planned initiation of any pain management intervention (interventional or rehabilitative) targeting the lower extremity
Anticipated changes in pain medication during the study period
Pregnancy, as determined by a urine pregnancy test
Active cancer or chemotherapy within the past year
Montreal Cognitive Assessment (MoCA) score below 17
Known or suspected infection in the lower extremity
