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This survival-medicine website provides general information, not individual advice. Most scenarios assume the victim cannot get expert medical help. Please see the disclaimer.

How to Know If You Really Have a Concussion

by James Hubbard, MD, MPH

Almost everyone has hit their head and seen stars. Sometimes it kind of dazes us. We usually rub it and go on with what we’re doing. But sometimes, people get symptoms, and they linger. Then the question becomes, do you have a concussion? And why does it matter to know?

I hope you know you should see a doctor if you ever get knocked out. But what if you just have bad headache? And what should you do if you can’t get to a doctor?

We’re learning more and more how seemingly minor concussions can damage our thinking for as much as a lifetime. No matter the reason for the head trauma, whether it’s sports or a fall or a tree limb, you should know what to watch for and what you should do.

Any sport has its share of concussions—any—from soccer to football to basketball to cheerleading. Concussion can happen at all ages, but a mild concussion in a young person’s still-developing brain has the potential to be more serious than in an adult’s.

Still, that doesn’t mean we older folks shouldn’t worry. For instance, the military has gone into overdrive trying to learn how to prevent concussions and what the best treatment is to diminish long-term effects. And if you follow pro football, you know concussions have become the sport’s most talked-about injury. Many former players are just now reaping the damage from the times they “got their bell rung” and just shook it off. Multiple concussions take their toll.

But, even after one concussion—even what we’d call a mild one—the effects can linger for weeks to months to years, especially if the injury isn’t treated correctly.

Do You Have a Concussion?

Check the Neck

Never forget, if there is a head injury, there could be a serious neck injury. Check the neck thoroughly. Neck injuries cannot ever be ruled out unless the person is alert enough to follow commands and tell you what hurts, what’s numb, etc. See my post and video for stabilizing a neck.

In order to know if you have a concussion, technically termed a “mild traumatic brain injury,” you have to know the signs and symptoms to look for. Most of the following information comes from the CDC’s website section on concussions. The “Heads Up” videos are especially good.

Get to a Doctor

Of course, a thorough, expert medical exam and X-rays—if indicated—are essential after any head or neck trauma, but it becomes a must even if it’s hard to get to a doctor if there is:

  • Any loss of consciousness greater than 30 seconds
  • Weakness or numbness of an arm or leg, hand or foot, fingers or toes
  • Neck tenderness
  • Loss of range of motion in the neck

Signs and symptoms of a concussion come in four general categories. These problems can occur immediately or start hours after the injury.

1. Physical

  • Headache
  • Increased sensitivity to light or sounds
  • Dizziness
  • Trouble with balance
  • Nausea or vomiting
  • Double or blurry vision

Quick exams to check for these signs and symptoms:

    1. Have the person stand, feet together and eyes closed. Be ready to catch if they start falling because of balance problems. If they pass this …
    2. Have them open their eyes and stand on one foot.
    3. Have them walk a straight line.
    4. Have them stretch out a hand, then touch their nose with their index finger. Alternate hands and repeat a few times.

If the person has problems with any of these, think concussion.

2. Thinking

  • Confusion
  • Amnesia (can be trouble remembering things that happen either before or after the injury)
  • Loss of consciousness
  • Feeling foggy
  • Disorientation—trouble knowing what happened, where they are, who they are, or what day it is.
  • Books adTrouble focusing
  • Slurred speech
  • Slowed verbal or physical responses
  • Excessive drowsiness

Quick exams:

    1. Ask them their name, your name, what day it is, and where they are. If they can’t answer all the questions, or if they answer very slowly, they’ve likely had a concussion.
    2. Place your pointer finger about a foot from their face. Have them follow your finger as you move it from side to side, up and down, and diagonally. They should be able to follow it without much lag time.

3. Mood

  • Mood swings
  • Increased irritablility
  • Excessive fatigue that lingers
  • Nervousness/anxiety
  • Depression/sadness

4. Sleep

  • Trouble getting to sleep
  • Sleeping more than usual
  • Sleeping less than usual

See what people are saying about The Survival Doctor e-books.

When a Concussion Becomes an Emergency

Downloadable Chart

The CDC has a chart you can download to follow the status of someone post-concussion. Click here to download the PDF.

Any person with a concussion should be observed for 24–48 hours for any new problems and for initial problems getting worse. If things do get worse, it becomes essential that the person get expert medical help right away since they are going to need further evaluation, along with treatment that just can’t be done in the field.

Danger signs and symptoms include:

  • Increasing headache
  • Slurred speech
  • Repeated vomiting
  • Increasing confusion
  • Seizures
  • Increasing irritability

Exam: Shine a light in one eye, then the other, to check the pupils. They should react and constrict equally. Note the initial exam, repeat every 30 minutes for a couple of hours, then every two hours for the next 24. Watch for changes. It’s much better to do this in a fairly dark place so the eyes will be dilated to start. Try it on a friend to get the hang of it, so you know what a normal exam looks like.

Aha! You Have a Concussion. What to Do.

Other than the above,

1. Rest. It is essential. Any person with a concussion needs to rest physically and mentally until the symptoms have been gone for 24 hours. That means no play and no school. And if you’re in a disaster, someone else needs to take charge if at all possible. It’s not only the danger of poor judgment that makes this important. It’s not even just the fact that getting a second concussion before the first heals is particularly dangerous. It’s that a concussion affects your whole brain. The metabolism changes, the synapses fire improperly. Physical activity can worsen this and also prolong recovery. So can mental activity. You have to rest your thinking. No texting or videogames, no television or reading, and delegate all decision making you can.

The symptoms can last from a few hours to many months. After they’ve gone away for 24 hours …

2. Gradually start back the mental and physical activities. If the headache or other symptoms return, you need to do less activity for 24 more hours.

I know this can be very, very inconvenient. But if you don’t do it right, symptoms will linger. In fact you may never get back to normal.

However, the good news is the vast majority of people with concussions do return to normal brain function, usually within 24–48 hours, especially if it’s their first concussion.

What about you? Have you known anyone who had a concussion? How did they do?

 

Photo by Niklas Pivic on Flickr.

  • Janet

    i was cleaning my closet (its a walk in) and i hit my head because i turned around without looking and i hit my head on the door frame. i had a headache and was a little dizzy. i feel okay now i took advil and ate dinner. should i be concerned? should i watch out for anything?

    • http://thesurvivaldoctor.com/ James Hubbard, MD, MPH

      If you’re feeling ok now, just watch out for new symptoms like I mention in the post.

  • Calla

    So, on Sunday my brother accidentally slammed a door into my head, and I was really dizzy, but I felt fine five minutes later. Then a day later I got a really bad headache from light or sound. Every day the headache reoccurs worse and worse and I feel a little dizzy sometimes. Do I have a concussion?

    • http://thesurvivaldoctor.com/ James Hubbard, MD, MPH

      Sounds like it’s a good possibility. Be sure to tell your parents your symptoms and, if you haven’t, consider some ibuprofen or acetaminophen. It also sounds like you might need to have a doctor check you out, if your parents agree.

  • Alex

    Oh and where i hit my head was like on the left topish area of my head. Its been like 30minutes now and i have a little goose egg. My left temple kinda of hurts.

  • Alex

    Hi i was riding my skate board today after it was raining today and my wheels slipped and i fell backwards onto some cement. My lower back hit first and and 5 to 10 minutes later my head didnt even hurt. Its like i never fell. Do i have a concussion? im never not wearing a helmet again!! P.s i wasnt really going that fast and i think most of the impact was to my lower back.

    Please respond!! Im kind of worried. Just in case

    • http://thesurvivaldoctor.com/ James Hubbard, MD, MPH

      Alex, I can’t diagnose you personally. But, in general, if your head doesn’t hurt much, and you have no symptoms mentioned in the post, I’m not sure why you think you might have a concussion. However, it’s always good after an injury to let someone know so they can watch you for any signs of problems.

  • anon

    kay, yesterday i was at the park i was on top of the soccer post like not on but hanging upside down. it tipped over and fell on my head, i dont know if i have a concussion im not in alot of pain anymore. i havent told my mom, she would be mad because i didnt tell her when it happend, she wasnt home my friends helped me up i hurt my back not badly like it hurts when i stretch and my left ankle, my right ear the side the net fell on was red/purple and kinda is. it hurts a little when i put pressure on it. and there is alittle bump.. IDK what to do, i dont wanna tell my mom. Help?

    • anon

      never mind im okay now

      • http://thesurvivaldoctor.com/ James Hubbard, MD, MPH

        If the pain continues, you must tell your mom so you can get checked out.

  • Ethan

    I was hit in the head with a basketball and have had a concussion before. I am not having any problems with memory or concentrating. I have had an ongoing headache for the past 2 days and have been feeling slightly dizzy at times. Is this a concussion?

    • http://thesurvivaldoctor.com/ James Hubbard, MD, MPH

      Ethan, that’s hard to say. You should let your parents and coach know, and rest. And read my post for suggestions.

  • gina

    I hit my head about 24 hours ago with the car door. I went to the hospital and they did a ct scan and they said it came out normal. Nothing wrong. But the nurse told me that the doctor said I had a small concussion. Now I feel like a that side of my head numb and I feel like tired.. they gave me Tylenol but i already took one a while ago but after a while I feel the same. Is it normal or not. What should I do?? Or should I jus rest?? Please help me I am very worried. I don’t have a lot of pain but it’s like if I were to get a migraine.

    • http://thesurvivaldoctor.com/ James Hubbard, MD, MPH

      Just follow what the nurse and doctor told you. Take Tylenol or Advil or Aleve, ice any bruises. Tiredness and numbness around the injury are fairly common symptoms of depression. Be sure to read my post well.

      • gina

        Thnx a lot. Yeah I will do that. I put ice where I got hit . I do not have any bruises only that I felt a little numb and pressure when I layed down with that side down. Besides i have been having anxiety atacks and am a bit depressed because i have to get surgery due to i have a dermoid ovarian cyst..and i am nervous since i have never gone through surgery.. & then this happens & i got more worried/anxious/ & a bit more depressed….So one more question. I don’t need to go again to the ER right…& how long do you think I will have this symptom?? Again thnx a lot for replying to me :))

        • http://thesurvivaldoctor.com/ James Hubbard, MD, MPH

          I can’t make specific suggestions for you since I haven’t see you. If you feel like you’re getting worse and worse go to the emergency room. Usually these symptoms last for a couple of days and start getting better. It would be good to follow up with your regular doctor. Also, see your doctor for the anxiety attacks and depression. There are things you can do for those. And, again, please read my post carefully.

          • gina

            Well I am now better only every now and then my head hurts. Though it doesn’t hurt that much..and specifically which part of the post do I read?? So if I only have a little headache I should not worry unless I get other symptoms like a major headache,& other symptoms like problem with my vision? Also I am here at work and I have to use the computer. Do you think it is a bad idea, will my head hurt more??

          • http://thesurvivaldoctor.com/ James Hubbard, MD, MPH

            Gina, please read my general rest suggestions on the post. Certainly, if you use the computer and start having symptoms, stop.

          • giina

            I will read it and thnx a lot for helping me I was very worried evn though at the ER they told me everything was fine and gave me Tylenol but then because I woke up the next day with a minor headache I got worried. Maybe it’s also due to my anxiety. But I will try not to use the computer a lot. Again thnx a lot.

  • Aaron

    So today, i was playing pass with my friends and I looked away for the amount of time for the softball to hit me in the head. I don’t remember if I saw a white light, but I remember my friend bringing me to the nurse and my head ringing for about 10-15 minutes. I also am getting headaches whenever I get up and move around. My neck is also stiff. It has been about 8 hours since this has happened, is this a concussion?

    • http://thesurvivaldoctor.com/ James Hubbard, MD, MPH

      Sounds like it. Be sure to let someone close to you know. And see a doctor.

  • Tmikoleit

    I bent over basically as fast as I could and slammed my upper right forhead on my sink counter. I didn’t develop a strong head ache until about 6 hours later in the day. Now I am extremely sensitive to light and noise. The strong headache is the only symptom present. I woke up with a small headache to start the day and spent the entire time from the head knock until tonight computer programming so a bad headache without the counter incident wouldn’t surprise me at all. Should I just wait a few days and see if anything persists? My forhead has a large black and blue welt and is split on the welt a little bit.

    • http://thesurvivaldoctor.com/ James Hubbard, MD, MPH

      Please tell someone so they can observe if you and take you for medical care if you get worse. Sometimes you’re not the best judge if you start getting a little confused. Also, consider seeing a doctor now if the headache is not slowly improving and can’t be relieved by something like Tylenol (acetaminophen.) In addition, follow the treatment outlined in the post.

  • wes

    I just got a major concussion from riding a bull, and colliding heads with him then him stomping my head, so im told….

    • http://thesurvivaldoctor.com/ James Hubbard, MD, MPH

      That’ll do it.