You must tell DVLA if you suffer from cataplexy.
You can be fined up to £1,000 if you don’t tell DVLA about a medical condition that affects your driving. You may be prosecuted if you’re involved in an accident as a result.
Car or motorcycle licence
Bus, coach or lorry licence
Fill in form SL1V and send it to DVLA. The address is on the form.
Read further information on the dangers of driving while tired in the DVLA leaflet ‘Tiredness can kill: advice for drivers’.