Welcome to the first instalment of our alphabetical guide to DVLA notifiable medical conditions! As a fleet manager, you might think you’ve heard every driver excuse in the book—but the ones you know are just the tip of the iceberg.

Forget the common cold or a “dodgy takeaway.” In this series, we dive deep into the most unusual and specific medical conditions that could impact driver eligibility, creating real challenges for fleet operations. In Part 1, we’re exploring everything from A through D, revealing the quirkiest, strangest, and sometimes most surprising DVLA issues that could affect your drivers.

Why Fleet Managers Need to Know About DVLA Medical Conditions

Understanding these unusual DVLA medical conditions isn’t just trivia—it’s critical for compliance, safety, and smooth fleet management. From obscure allergies to rare disorders, knowing what could potentially affect a driver’s license helps fleet managers plan ahead, avoid legal complications, and ensure operational efficiency.

A is for Agoraphobia

This one is a true logistical paradox. Agoraphobia isn’t just a fear of open spaces; it’s a severe anxiety about being in situations where escape might be difficult. You know, like being stuck in rush hour traffic on the M25 with a perishable load.

• The call you might get: “Morning, boss. I’ve made it to the end of the industrial estate, but that big, open roundabout is giving me the sweats. Can we reroute the entire delivery through residential cul-de-sacs?”
  
• The reality: A professional driver who is terrified of the very concept of ‘the open road’ presents a unique challenge. It’s a serious condition that can make a driver’s job impossible, and if it affects their ability to drive safely, the DVLA must be notified.

B is for Blepharospasm

Ever had a driver you thought was winking at you cheekily every time you gave them a job? They might not be flirting; they might have Blepharospasm. This is a neurological condition that causes involuntary eyelid muscle contractions, ranging from excessive blinking to a full, forced closure of the eyes.

• The call you might get: “Sorry, I had to pull over. I accidentally winked at a lorry driver, who then spent five miles trying to race me. It was all a bit much.”
  
• The reality: Uncontrollable blinking when you’re trying to navigate Spaghetti Junction is, to put it mildly, a problem. It’s another condition the DVLA needs to know about, as a driver needs to be able to, well, see.

C is for Cataplexy

This condition is a real conversation stopper. Cataplexy is a sudden and brief loss of voluntary muscle control, usually triggered by strong emotions like laughter, excitement, or anger. Imagine your driver hearing a hilarious joke on the radio and suddenly being unable to hold the steering wheel.

• The call you might get: “Good news and bad news. The good news is I just heard the funniest joke ever. The bad news is I slumped over the wheel and mounted the curb outside the depot.”
  
• The reality: While it sounds like something from a cartoon, Cataplexy is often linked with Narcolepsy (see our future ‘N’ instalment!). It’s an extremely serious condition for any driver, and immediate notification to the DVLA is essential.

D is for Diplopia (Double Vision)

Before you reach for the breathalyser, consider this. Diplopia is the medical term for double vision. It makes judging which of the two lorries in front of you is the real one a bit of a lottery.

• The call you might get: “Which of the two loading bays did you want me to reverse into? And why are there two foremen giving me conflicting hand signals?”
  
• The reality: The DVLA is crystal clear: you must not drive with double vision. The only short-term solution is often an eye patch. While this adds a certain piratical flair to your workforce, it’s a critical safety issue that needs immediate management.

…And One for the Road: Déjà Vu

Yes, you read that right. That fleeting, glitch-in-the-matrix feeling of having been somewhere before is on the DVLA’s list. While we all get it occasionally, persistent or distressing déjà vu can be more than just a spooky moment.

• The call you might get: “Sorry, boss, I’m going to be late. I’m stuck on the A14 and I have this overwhelming certainty that I already delivered this pallet of widgets this morning. I keep checking the back, but the feeling won’t go away.”
  
• The reality: It might sound like a convenient excuse for a long break at a greasy spoon, but frequent déjà vu can be a symptom of neurological issues, such as temporal lobe epilepsy. If it’s happening often, it’s something the driver’s doctor and the DVLA need to be aware of.

Coming Up: DVLA Medical Conditions E-H and Why Compliance Matters

Join us next time as we explore DVLA notifiable medical conditions from E through H, where the list only gets stranger. While it’s fun to learn about unusual driver ailments, there’s a serious legal and safety obligation for all drivers.

It is every driver’s personal responsibility to notify the DVLA of any medical condition or disability that could affect their driving. Failing to do so can result in a fine of up to £1,000 and may lead to prosecution if involved in an accident. Fleet managers and drivers alike should familiarise themselves with the official DVLA guidance. You can check whether a condition affects driving via the GOV.UK A-Z list:

Check if a health condition affects your driving – GOV.UK

Managing driver health and DVLA compliance can be challenging. At Fleet Service GB, we help reduce compliance risks with our FSGB Driver Management solutions, ensuring your drivers are safe, legal, and fit for the road.

Stay informed, maintain open dialogue with your team, and prioritise safety to keep your fleet running smoothly.