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A concussion diagnosis can come with serious consequences for the young athlete, who may need to miss a game or two.

But it can also lead to the athlete’s return to playing hockey, basketball or football, and in some cases, to a career as a professional athlete.

The American Academy of Neurology (AAN) and the National Football League (NFL) both require the diagnosis of concussions to play professional sports.

The NFL, the only professional sports league with concussion protocols in place, does not require a diagnosis.

But there are some guidelines that NFL teams follow.

The most important rule is to be aware of your symptoms.

Symptoms include headaches, dizziness, memory loss, memory lapses and feeling lightheaded.

The NFL and the AAN recommend that any player who has symptoms of a concussion undergo a neurological exam.

Symptoms of a brain injury can vary from one person to another.

For example, someone with a concussion may not feel dizzy or tired.

But someone with no concussion symptoms may not have a headache or dizziness.

Symptom severity can vary by severity of symptoms.

For instance, someone who is experiencing mild symptoms of concussion may experience mild to moderate symptoms of headache.

This person may have a mild to severe headache.

A concussion diagnosis does not guarantee that a player will play again.

But symptoms and the severity of the symptoms are often the first indicators of whether a player is likely to play again, or if a player could possibly need further evaluation.

The AAN and NFL have guidelines that are consistent across professional sports leagues.

Symptic symptoms are usually the most important diagnostic signs of concussion.

The more symptoms, the more likely a concussion diagnosis is made.

Sympses may include headaches and dizziness as well as memory loss.

A concussion also may involve blurred vision, confusion and difficulty concentrating.

The symptoms can also vary across players, teams and regions.

In the NFL, symptoms may include a headache, dizzyness, confusion, difficulty concentrating, memory problems and muscle spasms.

Symptoms can also be mild, and can include a mild headache, a headache without any dizziness or memory loss or a mild or moderate headache.

If symptoms persist or worsen, a concussion can be diagnosed.

Symposia may include fatigue, muscle spasm and fatigue, fatigue without memory loss and muscle pain.

A concussive injury may also include a sensation of tingling, numbness or tingles.

If a concussion occurs in the neck or shoulder area, the diagnosis may also involve the presence of blood clots or a brain bleed.

A head injury can result in a transient loss of consciousness and confusion.

This condition may last a few minutes or hours.

Symptoms may include blurred vision and a change in taste and smell.

The symptoms can vary across people and regions, depending on the severity and the cause.

In addition to the symptoms and symptoms of symptoms, there may also be symptoms of neurodegenerative changes in the brain, or signs of the effects of brain injury, such as brain swelling, cognitive dysfunction, memory deficits and difficulty with concentration.

Brain injuries can cause symptoms including memory loss (memory loss may include difficulty with remembering, finding and remembering names and dates, and remembering what words have been spoken), blurred vision or tingle, confusion or cognitive problems, and other signs of brain damage.

Brain injuries also can affect how the brain processes information.

A person who has a concussion should be examined by a neurologist and neurologist should then rule out any other potential symptoms or signs, including brain swelling.

The first sign of a possible concussion is an acute loss of conscious awareness, and the first sign that someone has a head injury is the loss of awareness and memory.

The severity of a head injuries may depend on the extent of brain swelling and whether the person has cerebral palsy or cerebral palsial disease.

The first sign a person has a brain concussion is the sudden loss of memory.

This means the person may lose track of time and remember things that have occurred before, such to the point that they no longer remember what happened, or when.

The person may also experience difficulty with recognizing the world around them and may not remember what they were doing before.

The loss of memories and the inability to recall what happened can lead to loss of occupational or academic performance.

The second sign of brain concussion that indicates brain injury is a temporary loss of brain function or brain swelling in the area of the brain where the brain damage occurred.

A temporary loss in function is typically not dangerous, but the loss may lead to a brain swelling condition called cortical thickness, or “cortical atrophy.”

A cortical atrophy condition can result from a concussion, or from a brain surgery.

A temporary loss or decrease in brain function, or brain swellings, can also indicate a transient brain injury.

The transient loss or decline in brain functions, or the transient brain swelling may be more severe