You bang your head on a shelf while hunting for a lost remote control. Or maybe your child gets hit in the head while playing soccer. How can you tell if it's okay to ignore a bump to the head or if checking for a concussion is in order? Become familiar with the different types of head injury symptoms, including signs of concussion. When you know what they mean, you can take the appropriate steps for timely medical help. Symptoms of a Minor Injury A blow to the head doesn't always cause a serious problem. Symptoms of a mild head injury include: Some slight swelling A minor cut Vomiting two or three times only Having a mild headache These symptoms aren't usually cause for concern. Still, it's a good idea for adults to see a doctor within a day or two of the head injury to be sure that damage isn't worse than it seems. Sometimes, symptoms of a concussion don't show up for several hours or longer. If it's a child who had the head injury, call the doctor for an exam. This should be the case if your child has hit their head or been knocked in the head, even if there aren't any worrisome symptoms. Warning Signs of a Concussion A concussion can have many different effects. It can affect your mind, body, emotions, and even your ability to sleep. Be on the lookout for these common symptoms of concussion: Forgetfulness, especially not remembering what led to the head injury Feeling confused, out of it, or just not quite normal Headache A feeling of pressure in the head or dizziness Losing consciousness A ringing sound in your ears Seeing spots or stars or blurry vision Slurred speech Feeling very tired or sleepy Keep in mind that some concussion symptoms don't appear for several hours or even a few days. These include: Trouble sleeping Being sensitive to light or sound Feeling irritable or depressed or having other changes in behavior Changes in taste and smell If you notice any of these signs, call your doctor as soon as possible. Your doctor can determine if you have a concussion and map out a recovery plan to prevent further damage. Signs of a Serious Injury A very serious concussion usually comes with more intense symptoms. These are all signs of a serious head injury that need immediate medical attention: A very serious wound Not regaining consciousness The pupil of one eye being larger than the other Bruising under your eyes or behind your ears Seizures Nausea that doesn't stop or a loss of appetite Vomiting more than two to three times or vomiting several hours after the injury A very bad headache that won't go away or gets worse Being very sleepy, confused or slow Feeling weak or numb in any part of your body Problems with balance or coordination Uncontrolled crying, which can be constant in children For an infant, a swollen soft spot on the front of the head If you see any of these symptoms in yourself, your child, or anyone who's had a head injury, take immediate action. Do not try to diagnose a concussion. Go to the emergency room or call 911. If you're not sure if you or someone else has symptoms of a concussion, call your doctor for advice.