DMTs often target the immune system, which plays a critical role in many neurological diseases. For instance, in Multiple Sclerosis (MS), the immune system erroneously attacks the myelin sheath surrounding nerve fibers. DMTs for MS work by modulating or suppressing immune activity to reduce the frequency and severity of these attacks. Different DMTs work through various mechanisms such as inhibiting specific immune cells, reducing inflammation, or altering the migration of immune cells to the central nervous system.