A concussion is a mild traumatic brain injury. It happens when a bump, blow, or jolt to the head, or a hard hit to the body, makes the brain move rapidly back and forth inside the skull. That movement stretches brain cells and sets off chemical changes that alter how the brain works for a time. Most people recover fully, but the first hours and days after the hit are when your decisions matter most.
Head injury symptoms, even without losing consciousness
Most concussions happen with no blackout at all. Waiting for someone to pass out before taking a head injury seriously is risky. Symptoms can also take hours to appear, which is why people feel fine at the game and terrible at bedtime.
Common signs after a hit to the head include:
- Headache or a feeling of pressure in the head
- Dizziness, balance problems, or blurry vision
- Nausea or vomiting
- Feeling foggy or unable to concentrate
- Sensitivity to light and noise
- Fuzzy memory of the moments just before or after the hit
- Sleeping more or less than usual
Toddler hit their head? When to worry
Young children cannot describe any of this, so parents are left reading behavior. Watch for crying that will not settle, refusing to eat, losing interest in toys, unsteady walking, or unusual sleepiness. Any head injury in a baby under a year old deserves a visit, since infants show fewer obvious signs and our pediatric team would rather check and reassure you than have you wait it out.
Head injury danger signs: go to the ER now
Some symptoms point to bleeding or swelling inside the skull, not a simple concussion. Come in immediately for a headache that keeps getting worse, repeated vomiting, seizures, slurred speech, weakness or numbness, one pupil larger than the other, unusual confusion or agitation, or being difficult to wake up. Any loss of consciousness needs evaluation.
Some brain bleeds also start with a stretch of feeling fine before symptoms hit. Come in promptly if the injury came from a car accident or a fall from a height, or if you take blood thinners.
Urgent care or the ER for a head injury?
Head injuries belong in an emergency room. Urgent care clinics usually lack CT imaging, so a suspected bleed gets transferred rather than treated. That said, a concussion does not show up on imaging at all. A CT looks for skull fractures and bleeding, and not every head injury needs one, especially in children, where we weigh the specific risk factors before exposing a child to radiation. Our board-certified emergency physicians make that call in person, with CT and other imaging on site, so a scan happens fast when it is warranted and is skipped when it is not.
Is it safe to sleep after a head injury?
Yes, once a physician has examined the person and ruled out serious injury. The old rule about waking someone every hour is outdated, and sleep helps the brain heal. What still matters is getting evaluated first. If someone cannot hold a conversation, walk steadily, or stay awake, that is an emergency, not a nap.
How long does a concussion last?
Most people recover within days to a few weeks, and children and teens often take longer than adults. We advise about 24 to 48 hours of relative rest, meaning normal daily activities with less screen time. After that, light activity such as walking or a stationary bike is encouraged, as long as symptoms do not flare badly. Lying in a dark room for days is outdated and can drag recovery out longer.
When headaches, dizziness, sleep trouble, or mood changes last beyond a few weeks, that is called persistent post-concussive symptoms, and it is treatable.
Getting back to school and back on the field
School comes before sports, in small steps, with a step backward whenever symptoms spike. The firm rule is avoiding anything that risks a second hit, since a repeat concussion before the first heals can cause rapid, dangerous brain swelling.
Student athletes generally need a written physician clearance before their school will let them practice or compete again. Our physicians handle these evaluations, so plan for that visit rather than being surprised by the paperwork later.
24/7 head injury care in Houston
Life Savers ER, founded by Dr. Foye Ikyaator in 2015, treats head injuries around the clock with board-certified physicians, a no-wait policy, and on-site imaging and labs. Check in online before you arrive, or come straight to one of our locations in Willowbrook, the Heights, Summerwood, or Sugar Land. If you or your child took a hit to the head and something feels off, walk into any Life Savers ER today.
