If you’ve hit your head and it’s bleeding, the first thing to do is apply firm, steady pressure with a clean cloth or gauze. Scalp wounds bleed a lot, often far more than you’d expect, but most can be managed at home with basic first aid. The key is stopping the bleeding, watching for warning signs of a deeper injury, and knowing when the situation calls for emergency care.
Why Head Wounds Bleed So Much
The scalp has an extremely rich blood supply, with vessels running through a dense layer of connective tissue just beneath the skin. Unlike blood vessels elsewhere on your body, the ones in your scalp are held in place by tough fibrous tissue that prevents them from constricting when they’re cut. That’s why even a small scalp laceration can produce dramatic bleeding that soaks through cloth after cloth. It looks alarming, but the amount of blood alone doesn’t tell you how serious the injury is.
Stopping the Bleeding
Grab a clean cloth, towel, or piece of sterile gauze and press it firmly against the wound. Hold steady pressure for at least 10 to 15 minutes without lifting the cloth to check. If blood soaks through, layer another cloth on top rather than removing the first one, since pulling it away can disturb clots that are starting to form.
One important exception: if the area around the wound feels soft or depressed, or you suspect a skull fracture, do not press directly on the wound. Cover it lightly and get to an emergency room.
Once the bleeding slows, gently clean around the wound with lukewarm water. Remove any visible dirt or debris, but don’t probe deep into the cut. A shallow wound that stops bleeding on its own and has clean edges can often be managed with butterfly bandages. Deeper or gaping cuts typically need medical closure with stitches or staples, which are usually removed 7 to 14 days later.
When to Call 911
A bleeding scalp wound is one thing. A brain injury underneath it is another. A head injury can cause bleeding inside the skull even when there’s no open wound or visible bruise on the outside. That internal bleeding creates pressure on the brain, and symptoms can appear immediately or develop over hours.
Get emergency help right away if you notice any of these after a head impact:
- Seizures or convulsions (shaking or twitching)
- Loss of consciousness or increasing drowsiness, or inability to stay awake
- Repeated vomiting
- One pupil larger than the other or double vision
- Slurred speech, weakness, numbness, or poor coordination
- A headache that keeps getting worse and won’t go away
- Confusion, agitation, or inability to recognize people or places
For infants and toddlers, also watch for inconsolable crying or refusal to nurse or eat. Young children can’t describe what they’re feeling, so behavioral changes carry more weight.
The 72-Hour Watch Window
Most dangerous complications from a head injury show up within the first few hours, but some develop more slowly. Emergency departments typically observe patients for at least two hours before considering discharge, and you should continue monitoring at home for up to 72 hours afterward.
During this period, check on the injured person regularly, especially while they’re sleeping. It’s fine to let someone sleep after a head injury (rest is actually helpful), but wake them every few hours for the first night to make sure they respond normally, know where they are, and can answer simple questions. If they’re hard to rouse, confused, or their symptoms have worsened, that’s a reason to go back to the emergency room.
Symptoms like mild headache, slight dizziness, or feeling “off” are common after a head hit and usually resolve on their own. What you’re watching for is a pattern of worsening: a headache that intensifies instead of fading, new vomiting hours after the injury, or increasing confusion.
Rest and Recovery After a Head Hit
If you’ve ruled out an emergency, the next step is rest. Both physical and mental exertion can make symptoms worse or cause them to come back. In the first day or two, reduce screen time, avoid strenuous exercise, and take naps or rest breaks if you feel fatigued. Get a full night of sleep.
Let your symptoms guide you. If light activity like a short walk doesn’t make your headache worse, that’s a good sign you can gradually do more. If reading, working, or exercise brings symptoms back, scale down and try again the next day. Most people with a mild head injury feel noticeably better within a week, though some take longer.
Blood Thinners Raise the Stakes
If you or the injured person takes blood-thinning medication (warfarin, rivaroxaban, apixaban, dabigatran) or even daily aspirin or similar drugs, treat any head injury more seriously than you otherwise would. These medications significantly increase the risk of bleeding inside the skull, even from a minor bump. What would be a trivial injury for most people can become dangerous because the blood doesn’t clot normally, and any internal bleeding can keep expanding.
Anyone on blood thinners who hits their head should be evaluated by a doctor, even if they feel fine and the external wound is small. Most emergency protocols call for a brain scan in these patients regardless of symptoms. Don’t wait for warning signs to appear.
Children and Head Injuries
Kids bump their heads constantly, and most of the time it’s nothing serious. Research involving tens of thousands of children has identified specific factors that help distinguish low-risk bumps from ones that need closer attention.
For children under two, a bump on the back or side of the head (rather than the forehead), loss of consciousness for five seconds or more, a fall from more than three feet, or behavior that seems off to the parent all raise the level of concern. For kids two and older, the red flags include any loss of consciousness, vomiting, a severe headache, or a high-force mechanism like being hit by a car or falling more than five feet.
A child who bumps their forehead, cries briefly, and then goes back to playing normally is almost always fine. A child who seems unusually sleepy, vomits repeatedly, or isn’t acting like themselves needs medical evaluation.
Caring for the Wound Afterward
Once bleeding has stopped and you’ve ruled out anything more serious, keep the wound clean and dry. Wash gently with water once a day and avoid picking at scabs. If the wound was closed with stitches or staples, follow the specific timeline you’re given for removal, typically 7 to 14 days for scalp wounds.
Watch for signs of infection in the days that follow: increasing redness, swelling, warmth around the cut, pus draining from the wound, red streaks spreading from the area, or fever. Scalp wounds generally heal well because of the rich blood supply to the area, but any of those signs mean the wound needs medical attention.