Professor Young has a specialist interest in disabling neurological disorders, and is on both the UK Specialist Register for Neurology and the European Board of Physical Medicine and Rehabilitation. Since appointment as a consultant in 1992 at the Walton Centre NHS Foundation Trust, she has founded services in multiple sclerosis and motor neurone disease (MND).
She has been sole consultant for the MND service since its inception in 1992 and Care Centre director since 1999, when the Care Centre network was set up in the UK. She has been principal investigator for over 80 trials and published over 130 papers in MND, multiple sclerosis, brain injury and rehabilitation. She was on the NICE Technology Assessment Committee for several years and has also contributed to NICE as an expert for the guidelines on riluzole and NIV in MND, as well as four multiple sclerosis drug assessments. Committed to evidence based medicine guidance, she is an editor for both Cochrane Neuromuscular Disease Group, and Cochrane Multiple Sclerosis and Rare Diseases of the Central Nervous System.