What Types of Medical Conditions Can Affect a Person’s Ability to Drive Safely?

Alcohol isn’t the only thing that can impair driving ability. There are numerous medical conditions that can make driving difficult or dangerous, ranging from eye and vision problems to conditions that might affect judgment.

Let’s look at some of the more common conditions that can affect driving ability.

driving with medical conditions
Getting older? Caring for mom and dad?
Sign up for our weekly newsletter for tips and reviews to help folks age in place safely and maintain independence.

By signing up, you agree to our Terms and Conditions and Privacy Policy.

Medical conditions that affect driving

1. Cataracts

Cataracts occur when the lens of the eye becomes opaque, causing blurred vision. Cataracts can affect one or both eyes and are very common. However, driving safely requires clear vision, so cataracts can have a major impact on your performance behind the wheel. The impact depends on the progression of the cataracts.

Early stages may not cause much trouble, but in later stages, the blurred vision can cause issues like glare from headlights, poor night vision, and double vision. In most cases, corrective surgery is available to relieve symptoms and make driving possible again.

2. Macular degeneration

Macular degeneration is one of the leading causes of vision loss, especially among people over age 60. This is called age-related macular degeneration, and it refers to progressive worsening and loss of vision as people get older.

Macular degeneration can cause distortion in your central field of vision and make objects appear less sharp and defined. It can make seeing road signs, pedestrians, and objects in the road very difficult. There is no cure for macular degeneration. If the condition continues to progress and driving becomes unsafe, individuals may need to find alternative means of transportation.

3. Dementia

Dementia is a condition affecting memory, thinking, and social skills. The most common cause of dementia is Alzheimer’s disease, but it can also be caused by stroke, brain injury, and other diseases.

Dementia can make driving unsafe. It impairs judgment, memory, and decision-making skills. While individuals might still be able to drive safely in the very early stages of dementia, their condition should be monitored closely. Dementia is nearly always progressive, and eventually driving will become too risky and dangerous.

4. Epilepsy

Epilepsy is a neurological disorder that causes recurring seizures. It has many causes, including genetic disorders, brain injury, and stroke. Epilepsy is typically treated with anticonvulsant medications, although they are not always completely effective. Sometimes surgery is required.

As seizures cause a temporary loss of awareness or consciousness, driving with uncontrolled epilepsy could be a major safety risk. Many people with epilepsy will be subject to restricted driving privileges unless they can prove that the condition is controlled and that they have been seizure-free for a period of time. The exact requirements vary from state to state.

There are many more conditions that can impact driving ability, but these are the most common.

To learn more about safety on the road, read through our Car Safety Guide. If you worry that you or a loved one aren’t able to follow the tips in that guide due to a medical issue, it may be time to visit a doctor to evaluate the problem.


Compare the best medical alert systems

Brand
Best for
Lowest monthly price
In-home range
Backup battery
Landline option available
Learn more
Read review
Bay Alarm Medical
Best overall1000 ft.32 hrs.
Icon Yes  LightYes
Philips HomeSafe StandardPhilips LifeLine
Best for fall detection400 ft.Not available
Icon Yes  LightYes
GetSafe medical alert systemGetSafe
Best value1300 ft.32 hrs.
Icon No  LightNo
Medical Guardian Classic Guardian systemMedical Guardian
Best GPS tracking options1300 ft.32 hrs.
Icon Yes  LightYes
aloe care total careAloe Care
Best smart features200 ft.6 hrs.
Icon No  LightNo
MobileHelp
Best basic system1400 ft.24 hrs.
Icon No  LightNo

Data effective 05/13/2021. Offers and availability subject to change.

Celeste Tholen
Written by
Celeste Tholen
Celeste has dedicated her decade-long career to reporting and reviews that help people make well-informed decisions. She oversees editorial strategy and production for SafeWise, with a goal to help everyone find the information they need to make their homes and lives safer. Prior to SafeWise, she worked as an editor and reporter for KSL and Deseret News. She holds a Bachelor's degree in Journalism. In her free time, she volunteers at the local botanical garden and writers for the community newspaper.

Recent Articles

Senior woman hugging dog
The Best Medical Alert Systems of 2022
See which medical alert system is the best to keep you and your loved one...
safewise's best home security systems
10 Best Home Security Systems of 2022
After hundreds of hours of tests and research, plus a combined 50+ years of experience,...
security system being installed on wall
Best DIY Home Security Systems of 2022
DIY install home security systems are cost-efficient, effective, and easy to install. See which DIY...
couple sitting on floor with moving boxes and a dog
2022 Best Home Security Systems for Renters
These renter-friendly home security systems keep your house or apartment safe and require less commitment...