The Driver’s Medical Group (DMG) at the Driver and Vehicle Licencing Authority (DVLA) is responsible for evaluating individual drivers and/or riders with medical conditions, including disabilities, and determining whether or not an individual will be safe to continue driving and/or riding. If you are unsure whether or not you need to inform the DMG about an illness, condition or disability you can check the current A-Z list at; https://www.gov.uk/health-c… Finding your illness, condition or disability on this list, does not mean your licence is in jeopardy, it simply means you are legally obliged to inform them of your illness, condition or disability. In the vast majority of cases, there is nothing at all to worry about.