Falls & Head Injuries: The Blood Thinner Rule

Name: Falls & Head Injuries
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Why this matters

Most falls in an older adult cause nothing worse than a bruise. Two situations change that: any hit to the head in someone taking a blood thinner, and any fall that leaves someone unable to get up. The Centers for Disease Control and Prevention treats older-adult falls as a serious safety concern through its STEADI program. Knowing which falls need a doctor, and which need 911, keeps a bad afternoon from becoming a true emergency.

Know the signs

Blood thinners change the rule for head bumps

If your parent takes a blood thinner — warfarin, Eliquis, Xarelto, Plavix, or even a daily aspirin — any hit to the head means the emergency room, even if they feel completely fine right afterward.

Blood thinners make it harder for the brain to stop a small bleed on its own. That bleed can grow slowly and silently for hours, with no pain and no obvious symptom, until it suddenly isn't silent anymore. Feeling fine is not proof that nothing is happening inside.

This rule applies even to a bump that looks trivial. Know your parent's medication list — it changes the entire response to an ordinary bump.

Watch for delayed danger signs over the next two days

Even without a blood thinner, some danger after a head injury doesn't show up right away. Over the next 24 to 48 hours, watch for a headache that keeps getting worse, repeated vomiting, growing confusion, one pupil looking larger than the other, unusual sleepiness that's hard to shake, or new weakness anywhere in the body.

Any one of these means call 911, not wait and see. Check in over the next two days, especially overnight.

When someone cannot get up on their own

Finding a parent on the floor is frightening, and the instinct is to haul them upright immediately. Don't. Pulling someone up before you know what's hurt can turn a bruise into a fracture.

Ask first: does anything hurt, and where? If not, help them roll onto their side, then guide them to crawl or scoot toward a sturdy chair, and let them push up at their own pace.

If they're in pain, can't move a limb normally, or you simply can't get them up safely, call 911 for a lift assist. This is a normal, accepted reason to call — it doesn't mean a trip to the hospital, just safe hands to help them up.

Signs of a possible hip fracture

A fall onto the hip can fracture it, especially in older bones. The signs are fairly distinct: they can't bear any weight on that leg, the leg looks shorter or turned outward at an unnatural angle, or there's severe pain in the hip or groin.

If you see any of this, don't try to move them or straighten the leg. Keep them as still and comfortable as you can, and call 911.

When a fall means the ER, even with no head strike

A head injury isn't the only reason a fall needs medical attention. Get your parent checked the same day if they can't put weight on a limb, a joint looks deformed or badly swollen, pain doesn't ease with rest, or they seem unsteady in a new way afterward, even if they insist they're fine.

Falls in older adults are worth mentioning at their next regular checkup too, even the minor ones — a pattern of falling is itself something a doctor should know about.

How it really looks

Charlene bumps her head and insists she's fine

Charlene is reaching into a low cabinet when she stands up too fast and cracks the back of her head on the open door. It stings for a second, then she laughs it off and goes back to making dinner — no cut, no dizziness, nothing wrong. Her son remembers that Charlene takes a blood thinner for her heart, and that the rule is different: any head hit means the emergency room, feeling fine or not. Charlene protests the whole drive over. A scan finds a small, slow bleed that hasn't caused a single symptom yet, caught before it grows into anything worse. She keeps her medication list in her purse now, just in case.

Omar's daughter finds him on the kitchen floor

Omar's daughter lets herself in for their usual Sunday visit and finds Omar sitting on the kitchen floor, back against a cabinet, saying he's been down a little while. He isn't sure how long. Nothing looks broken, and he can move both legs, but can't push himself up alone. She doesn't try to haul him upright. She checks that nothing hurts, helps him roll to his side and inch toward a sturdy chair, and he gets most of the way up himself. Still, she calls 911 for help finishing the lift, unsure exactly how long he was down. Paramedics find nothing broken, and they're glad she called instead of guessing.

What to do until help arrives

Ask if anything hurts before you move them. Don't pull or lift someone up before you know what might be injured.
If they're on a blood thinner and hit their head at all, go to the emergency room, even if they feel completely fine.
If they can't bear weight, or a leg looks shortened or turned outward, don't move them — call 911.
If they're uninjured but can't get up, help them roll to their side, then crawl or scoot to a sturdy chair, and stand at their own pace.
Call 911 for a lift assist if you can't get them up safely — this doesn't mean a hospital trip, just help getting them up.
Gather their medication list, especially any blood thinner, to have ready for paramedics or the ER.
Watch closely over the next 24 to 48 hours for a worsening headache, vomiting, confusion, or new weakness — any of these means call 911.

Myths & mistakes

People often think a minor bump on the head isn't worth a hospital visit if the person feels fine.Actually on a blood thinner, feeling fine means nothing — a slow bleed can build for hours with no symptoms at all.

People often think you should get a fallen person back on their feet right away.Actually pulling them up before checking for injury can turn a bruise into a fracture. Check for pain first.

People often think calling 911 just to help someone up wastes their time.Actually a lift assist is a normal, accepted reason to call 911, and it doesn't mean an ambulance ride to the hospital.

What you learned

Any head strike on a blood thinner means the emergency room, even if the person feels fine.
A slow brain bleed can build for hours with no symptoms at all.
Don't yank a fallen person up — check for pain first, then help them rise at their own pace.
Calling 911 for a lift assist is normal and doesn't require an ambulance ride.
A leg that's turned outward or won't bear weight after a fall means don't move them, and call 911.

Sources

Centers for Disease Control and Prevention — STEADI: preventing and responding to older adult falls
American Association of Neurological Surgeons — Recognizing a head injury and when it needs emergency care

Spot an error? Tell us — accuracy matters more to us than being fast.

Common questions

My mother takes a daily low-dose aspirin. Does that count as a blood thinner for this rule?

Yes. Aspirin thins the blood too, even at a low daily dose, so the same rule applies: any hit to her head means the emergency room, even if she seems completely fine. When you're not sure whether a medication counts, the ER can sort it out.

Is it really okay to call 911 just to help someone stand up?

Yes. A lift assist is a normal, everyday reason emergency crews respond to, especially for older adults living alone. It doesn't commit anyone to a hospital trip. It's far safer than risking an injury by trying to pull someone up on your own.

What if my father looks fine right after a fall but I'm still worried?

Trust that instinct. Watch him closely over the next day or two for a worsening headache, vomiting, new confusion, or unusual sleepiness, and get him checked the same day if anything changes. If he's on a blood thinner or hit his head, don't wait for symptoms — go now.

Check what you know

Five questions. Four correct to pass. Retake as many times as you like — this is practice, not a test.

This course belongs to Caring for Aging Parents. Courses that pair well with it: