The term ‘Multiple Sclerosis’ refers to the replacement of myelin, a fatty substance that forms a protective sheath around neurones, with scar tissue. It is thought that MS is an auto-immune disorder, where cytotoxic T lymphocytes have essentially attacked molecules in the myelin, although recent studies suggest that both a genetic predisposition and environmental factors are important in determining whether someone develops MS. In this podcast, I will explore the underlying pathology behind the condition, the signs and symptoms sufferers experience, and the current treatments available. (With thanks to our sponsor 'Curriculum Press' for providing content for this podcast)