In this episode of No Brain Behind, Dr. Monica Diaz discusses key global developments in multiple sclerosis presented at the 2025 ECTRIMS Congress. She reviews updates to diagnostic criteria for MS and NMOSD, advances in disease-modifying therapies, and emerging safety data in pregnancy and breastfeeding. The conversation also highlights how social determinants of health shape MS outcomes worldwide and the ongoing equity challenges in improving brain health for people living with MS.