This is an observational, non-interventional, multicenter, open-label study in patients being treated with any approved injectable or selected oral DMT for RMS in Germany. Prospective, primary data will be collected via questionnaires and an electronic case report form (eCRF) over a period of up to four years. Additionally, medical history of participants will be collected including disease duration, laboratory values, EDSS, MRI parameters and relapses.