Most head injuries from falls are mild and do not require emergency treatment, but knowing which symptoms signal danger can be the difference between a safe recovery and a life-threatening delay. The critical period begins immediately after the fall and extends for days or even weeks, because some dangerous complications develop on a delayed timeline. Your first job after any head impact is to watch for a short list of red-flag symptoms, and your second job is to keep watching even after the person seems fine.
What to Do in the First Few Minutes
If someone falls and hits their head, stay calm and start with the basics. Keep the person still and assess whether they are alert and responsive. Ask simple questions: “What day is it?” “Where are you?” “What happened?” If they can answer coherently, that is a good sign, but it does not mean you are done. If the person lost consciousness, even briefly, call emergency services. A momentary blackout after a fall counts as a serious warning, not something to shake off.
For someone who is awake and talking, check for visible injuries. Apply gentle pressure with a clean cloth if there is bleeding from a scalp wound. Scalp cuts bleed dramatically because of the dense blood supply in that area, so heavy bleeding alone does not necessarily mean the injury is severe. Do not move someone who complains of neck pain or tingling in their arms or legs, because a fall hard enough to cause a head injury can also injure the spine.
If the injured person is a child, the CDC advises monitoring them for signs and symptoms of concussion even if they seem okay initially. You know your child’s baseline behavior better than anyone, and changes from that baseline over the coming hours are what matter most.1Centers for Disease Control and Prevention. What to do After a Concussion – Section: Within an hour after a possible concussion or head injury
Red Flags That Demand an Emergency Room Visit
There is a specific set of symptoms that emergency physicians treat as urgent warning signs after head trauma. These are the situations where you should call 911 or go straight to an emergency department:
- Altered mental status: confusion that worsens over time, difficulty staying awake, or inability to recognize familiar people or places.
- Unequal pupils: one pupil noticeably larger than the other, which can indicate pressure building inside the skull.
- Seizures: any convulsive episode after a head injury, even a brief one.
- Repeated vomiting: throwing up more than once, especially if it continues or worsens.
- Worsening headache: a headache that steadily intensifies rather than gradually fading.
- Double vision: seeing two of everything, or blurred vision that does not clear.
- Weakness or numbness: new difficulty moving an arm or leg, or loss of sensation on one side of the body.
- Loss of coordination: trouble walking, stumbling, or sudden clumsiness that was not there before the fall.
Any of these findings would typically prompt an emergency physician to order a CT scan of the head to check for bleeding or swelling inside the skull.2PubMed Central. Traumatic Alterations in Consciousness: Traumatic Brain Injury – Section: ED Priorities The scan itself takes only a few minutes, and it is the fastest way to rule out a dangerous bleed. If any of these symptoms appear at any point after the fall, even hours later, treat it as an emergency.
The Observation Window at Home
When none of those red flags are present and the person seems largely fine, you still need to keep a close eye on them. Most emergency physicians and concussion guidelines suggest monitoring for at least 24 to 48 hours after a head injury, because symptoms of internal bleeding can emerge gradually as blood slowly accumulates inside the skull.
During this window, check on the person every few hours. If they want to sleep, that is generally okay, but wake them periodically to make sure they respond normally. The old advice about never letting a concussed person fall asleep is outdated. Sleep is actually helpful for brain recovery. The concern is not sleeping itself; the concern is missing a deterioration in consciousness. Waking someone every two to three hours during the first night and confirming they are coherent is a reasonable middle ground.
Pay attention to behavioral changes, not just physical symptoms. Irritability, unusual emotional reactions, slowed thinking, difficulty finding words, and sensitivity to light or noise can all indicate a concussion even when the more dramatic red flags are absent. In children, watch for changes in eating, sleeping, mood, and activity level.1Centers for Disease Control and Prevention. What to do After a Concussion – Section: Within an hour after a possible concussion or head injury A toddler who suddenly will not stop crying, or a school-aged child who seems unusually lethargic, deserves a medical evaluation even if the fall looked minor.
Why Children Are Evaluated Differently
Children’s heads are proportionally larger relative to their bodies, and their skulls are thinner, which changes both the injury pattern and the way doctors assess the damage. Emergency departments use a specific clinical decision tool called the PECARN algorithm to sort out which children after a head injury are at very low risk for a serious brain injury and which need a CT scan.3PubMed Central. Pediatric head trauma algorithm for head CT decision-making in the emergency department – Section: PECARN TBI algorithm The goal of these rules is to avoid unnecessary radiation from CT scans in kids who do not need them while still catching the ones who do.
The algorithm looks at factors like the child’s age, whether there was a loss of consciousness, whether they are acting normally, and the mechanism of injury. A toddler who fell off a couch onto carpet is evaluated differently from one who fell down a flight of stairs onto concrete. For infants under two, doctors are especially cautious because babies cannot describe their symptoms, and skull fractures in this age group sometimes occur with surprisingly little force. If you take a child to the emergency department after a fall, the medical team will typically observe them for a period rather than rushing to a scan, unless clear red flags are present.
One practical point parents often wonder about: a large goose egg or swelling on the forehead, while alarming to look at, is usually less concerning than swelling at the back or side of the head. Frontal bone in children is relatively thick. Temporal and occipital regions are thinner and sit closer to major blood vessels. That said, a significant bump anywhere on the head after a fall warrants at least a phone call to the child’s doctor.
Older Adults and Blood Thinners
Falls are the leading cause of traumatic brain injury in older adults, and the consequences tend to be more serious for this group. The aging brain shrinks slightly inside the skull, which stretches the small veins bridging the brain surface to the skull’s inner lining. These stretched veins tear more easily during an impact, making older adults more vulnerable to subdural hematomas, a type of bleeding between the brain and the skull.
The risk is amplified further for anyone taking blood thinners. Anticoagulant medications like warfarin and direct oral anticoagulants are widely prescribed in older adults for conditions like atrial fibrillation and blood clots. These drugs do exactly what they are designed to do: they slow the blood’s ability to clot. After a head injury, that same effect can allow intracranial bleeding to continue or expand when it otherwise might have stopped on its own.4PubMed Central / Wiley Online Library. Intracranial Hemorrhage in Older Adults: Implications for Fall Risk Assessment and Prevention
If you are over 65 and on a blood thinner, any fall in which your head is struck, even a seemingly trivial one, should be evaluated by a doctor. Many emergency departments will scan older patients on anticoagulants as a matter of course after a head injury, and some will observe them for several hours or even recommend a repeat scan the next day. This is not overcaution. The combination of age-related brain changes and reduced clotting ability is genuinely dangerous, and the bleeds that occur in this setting can progress silently for hours before symptoms appear.
This also applies to people taking antiplatelet drugs like aspirin or clopidogrel, though the risk profile is slightly different. If you are not sure whether your medication counts as a blood thinner, call your doctor or pharmacist after any head injury from a fall. When in doubt, go to the emergency room.
Rest, Recovery, and When to Resume Normal Activity
The approach to concussion recovery has changed significantly in the last decade. The old standard was strict rest in a dark room for days or weeks. Current evidence points in a different direction. The international consensus on concussion in sport, updated in 2022, recommends relative rest for the first one to two days, which means sticking to everyday activities and reducing screen time, but not lying in bed doing nothing.5British Journal of Sports Medicine. Consensus statement on concussion in sport: the 6th International Conference on Concussion in Sport–Amsterdam, October 2022 – Section: REST and exercise
After those initial 24 to 48 hours, light physical activity like walking or gentle stationary cycling is encouraged, as long as it does not make symptoms noticeably worse. The shift away from prolonged strict rest came after research consistently showed that people who stayed completely inactive for extended periods actually recovered more slowly. Light movement appears to promote blood flow to the brain and support healing, while prolonged inactivity can worsen fatigue, mood disturbance, and deconditioning.
The emphasis on “relative” rest means you should still avoid anything that poses a risk of another head impact. Contact sports, vigorous exercise, and activities with fall risk are off the table until symptoms resolve. Screen time does not need to be eliminated, but reducing it during the first couple of days helps because many people find screens aggravate headache and light sensitivity in the acute phase. After symptoms start improving, gradual return to screens, work, and school is the right trajectory. Most concussions resolve within two to four weeks in adults and within four weeks in children, though a subset of people experience symptoms for longer.
Delayed Complications That Can Surprise You
One of the more unsettling aspects of head injuries from falls is that serious complications can appear well after the initial event. Chronic subdural hematomas, where blood slowly collects between the brain’s surface and its outer membrane, sometimes develop weeks or even months after what seemed like a minor head injury. A published case report documented a chronic subdural hematoma appearing two months after a mild head injury in a patient whose initial neurological exam and CT scan were both normal.6Wiley Online Library. Development of a delayed chronic subdural hematoma 2 months after mild traumatic brain injury with a normal initial brain computed tomography: A case report – Section: Abstract
Chronic subdural hematomas grow slowly. Symptoms might include a gradually worsening headache, mental fogginess, personality changes, balance problems, or weakness on one side of the body. Because these symptoms creep in over weeks, people and their families often attribute them to aging, stress, or unrelated illness rather than connecting them back to a fall that happened a month or two ago. This is especially common in older adults, where the symptoms overlap with many other conditions.
The practical takeaway is that any new neurological symptom in the weeks following a head injury, even if the initial evaluation was reassuring, deserves medical attention. Mention the fall to your doctor even if it felt insignificant at the time. Chronic subdural hematomas are very treatable when caught, usually requiring a relatively simple surgical drainage, but they can become life-threatening if they grow large enough to compress the brain.
Falls That Do Not Seem Like Head Injuries
People tend to underestimate head injuries from falls partly because many falls do not feel dramatic in the moment. A slip on a wet bathroom floor, a missed step on the stairs, a stumble on an uneven sidewalk. The person gets up, feels embarrassed, notices a sore spot, and moves on. This is particularly common in older adults who fall frequently and may not report every fall to their families or doctors.
A head injury does not require a visible wound. You can sustain a concussion without any external mark because the brain injury happens from the brain moving inside the skull, not from damage to the scalp. A person who falls backward and hits the back of their head on a hard floor can have a completely clean scalp and still have a concussion or worse. The absence of a bump, cut, or bruise does not rule out a brain injury.
Similarly, the height of the fall is not always a reliable predictor of severity. Ground-level falls, where a person simply falls from standing height, account for a significant proportion of traumatic brain injuries in older adults. You do not need to fall off a ladder or down a staircase. The combination of a hard surface and an unprotected head is enough, especially for someone with thinner skull bones or who is on blood-thinning medication.
When You Can Relax
After 48 to 72 hours with no red-flag symptoms and a generally improving trajectory, the risk of a catastrophic acute bleed drops substantially. Most people with mild concussions are past the highest-risk window by that point. If you saw a doctor who performed a clinical evaluation and found nothing concerning, and symptoms like headache and fogginess are gradually getting better rather than worse, you are on a normal recovery path.
Signs that recovery is going well include headaches that respond to over-the-counter pain relief and lessen day by day, improving concentration and energy levels, and return of normal sleep patterns. For children, a return to their usual mood, appetite, and interest in play is a strong reassurance signal. Keep in mind that some lingering symptoms, like mild headache with exertion or difficulty concentrating in noisy environments, can persist for a few weeks even in an uncomplicated concussion. These are annoying but not dangerous as long as the overall trend is improvement.
One common source of anxiety is whether a second impact during recovery is especially dangerous. It is. The recovering brain is more vulnerable to a second injury, and a second concussion before the first has fully healed can cause disproportionately severe symptoms. This is why return-to-sport and return-to-activity protocols exist, with stepwise progressions and waiting periods. For anyone recovering from a fall-related head injury, avoiding situations with fall risk or collision risk until symptoms have fully cleared is worth taking seriously.