How Can I Tell If a Head Injury Is Mild or Severe?: Impact to the head can result in a number of types of head injuries, that can range in seriousness from mild to severe. Symptoms of a head injury depend on the type of injury.

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A Head Injury Can Be Difficult to Diagnose

Head injuries are routine, as are mild traumatic brain injuries. Concussions can be misdiagnosed, fairly easily, however. If someone exhibits the following symptoms, the patient should receive a CAT scan: headache vomiting older than age 60 years of age drug or alcohol intoxication amnesia visible trauma above the collarbone seizure
Concussion

Concussion (an injury to the brain) can be cause by significant blunt force trauma to the head, for example, falls, car accidents, being struck in the head. Treatment of concussion depends upon the severity of the injury. Concussions can be prevented by wearing protective gear when participating in sports, and taking care that homes are free from clutter and debris that can be easily tripped over.
Concussion Symptoms and Test

Concussions and mild brain trauma is classified in different ways and has different symptoms. Doctors use various tests to determine risk and treatment.
Contusion vs Hematoma

A hematoma is a collection of blood outside a blood vessel, and there are various type that range from minor (in the skin, for instance) to life threatening (in the brain). A contusion is a type of hematoma. The definition of a contusion is a bruise, which occurs when blood vessels are damaged or broken as the result of an injury.
Dementia in Head Injury

A head injury occurs when some trauma rocks the skull violently enough that the brain tissue inside hits the inside of the skull, twists, or is other wised shaken violently. With some serious or repeated brain trauma, dementia can result. Symptoms include memory loss, problems thinking clearly, insomnia, and many others.
Do Seizures Kill Brain Cells

Seizures are caused by a sudden surge of abnormal electrical activity in the brain that can affect the way a person appears or acts for a short time. Seizures (both repetitive and brief seizures) can kill brain cells (neurons).
Head Injury

Head injury is a general term used to describe any trauma to the head, and most specifically to the brain itself. Several types of head injuries may occur such as skull fractures, intracranial hemorrhage (bleeding) such as subdural or epidural hematoma. Treatment of a head or brain injury depends on the cause and severity of the injury. Skull fracture: A skull fracture is a break in ...
Hematoma

A hematoma is a collection of blood outside a blood vessel usually caused by injury to the blood vessel wall. Causes of hematoma include: trauma, head injury, bumps, infections, and diseases. Symptoms may be pain, redness, and swelling. Treatment of hematoma depends on the cause.
Hematoma v. Ecchymosis

A hematoma is a collection of blood outside of a blood vessel and ecchymosis is flat, purple-colored bruise. Symptoms and signs of hematomas and ecchymosis that are different include skin discoloration and where it is located. There are several causes of hematomas and ecchymosis, and most are usually minor, but some hematomas can be life threatening. Treatment for hematomas and ecchymosis depend on the type and severity.
Hematoma vs Hemorrhage

Both hematoma and a hemorrhage cause bleeding. A hemorrhage causes internal bleeding, while a hematoma is a collection of blood outside of the blood vessels, and usually, only cause bruises on the skin. However, hematomas can bleed internally too. The differences between the signs and symptoms of hematoma include a purplish or bluish skin, and a lump under the skin. Hematomas and hemorrhages in sensitive parts of the body, such as the brain or spine, will require medical treatment and can lead to serious complications or death if not treated promptly.
How Long Does A Mild Concussion Last

A mild concussion may not need treatment. Most concussions get better on their own over time. A mild concussion may last only hours to seven to 10 days. More severe concussions may last weeks to months. Symptoms of a mild concussion that can occur minutes to hours after injury may include memory loss, confusion, headache, dizziness, balance problems, nausea or vomiting, tiredness, crankiness, or irritability.
Subungual Hematoma (Bleeding Under Nail)

A subungual hematoma is a collection of blood in the space between the nailbed and fingernail. Subungual hematoma results from a direct injury to the fingernail. Symptoms and signs include a dark discoloration under the nail and intense pain. Treatment involves icing the injured digit, elevating the injured digit, taking pain medications, and draining the blood beneath the nail.
What Are the Three Types of Seizures

Seizures are caused by a sudden surge of abnormal electrical activity in the brain, which can affect how a person appears or acts, but for a short period of time. The types of seizures include generalized onset seizures, focal onset seizures, and unknown onset seizures.
What Is the PostConcussion Symptom Scale

The Rivermead Post-Concussion Symptoms Questionnaire (RPQ) is a patient self-assessment tool used to help measure the severity of post-concussion symptoms. It contains 16 questions about physical, cognitive, and behavioral symptoms, and asks patients to rate the severity of each symptom on a scale of 0 to 4.

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Subungual Hematoma (Bleeding Under Nail) A subungual hematoma is a collection of blood in the space between the nailbed and fingernail. Subungual hematoma results from a direct injury to the fingernail. Symptoms and signs include a dark discoloration under the nail and intense pain. Treatment involves icing the injured digit, elevating the injured digit, taking pain medications, and draining the blood beneath the nail.