Drivers should notify the Driving, Vehicle and Licencing Agency (DVLA) of two little-known health conditions they need to declare before they can continue driving.
If you've got certain kinds of health problems, such as issues with your eyesight or diabetes, it's possible that they could affect your driving ability and safety.
Therefore it's vital that you let the DVLA know of anything that could be a potential problem - and failing to do so could see you slapped with a £1,000 fine and invalid insurance.