The short explanation
Nodding off while driving is dangerous for him and others on the road, so your concern is justified. It may help to talk to him calmly, focusing on his safety and your family's worry, rather than criticising his driving. Suggest a check-up as a way to find a simple cause, rather than as a threat to his independence. Common causes in older men include sleep apnoea, often with loud snoring, as well as poor night sleep, some medicines, diabetes and heart problems. Many of these are treatable. In the meantime, suggest he avoids night driving, takes breaks, or that someone else drives when possible.
What depends on your situation
The parts of this that change from woman to woman. Uncertainty is stated, not hidden.
- Ask whether he snores loudly or stops breathing at night; this is important information for the doctor.
- Some medicines for blood pressure, allergies, pain or sleep can cause drowsiness.
- If he resists, involving a doctor he trusts may help.
What this answer cannot determine
The boundary of online education. These need a clinician who can see you.
- This cannot tell you why he is drowsy. A doctor needs to assess him.
Questions for your clinician
Take these with you. You can add any of them to an appointment card.
- Could he have sleep apnoea?
- Could his medicines cause drowsiness?
- Is it safe for him to drive until the cause is found?
- What tests does he need?
When to seek help
Clinician-approved guidance for this topic. When in doubt, being seen is never the wrong choice.
Emergency — call 112 now
- Call 112 if there is an accident or injury.
Get help the same day
- Arrange for someone else to drive the same day if he feels sleepy.
Book an appointment soon
- Help him see a doctor within a few days.
Sources
The evidence this explanation is built on.
- Sleep apnoea NHS
- Sleep disorders MedlinePlus (NIH)
- Sleep apnea MedlinePlus (US National Library of Medicine)
Who wrote and reviewed this
Every AskHer answer names its author. A clinically reviewed answer also names the clinician who signed it off — if no clinician is named below, it has not been clinically reviewed.
- Author
- AskHer Editorial (AI-assisted draft) AskHer's editorial team — not an individual clinician Works in English, தமிழ், हिन्दी
- Clinical reviewer
- Nobody yet No clinician has signed this answer off, and no person on the editorial team has read it yet. That is what the “Written with AI assistance” label means. It is queued for an editor to read, and then for a clinician who works in this area. The sources it was drafted against are listed above.
- Review status
- Written with AI assistance — not yet reviewed by a person
- Last reviewed
- Not yet reviewed by a person
- Version
- 1
Correction history
Substantive changes are listed, not quietly edited away.
No corrections have been made since this answer was first published.
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