Symptoms of concussions, such as confusion, blurred vision, headache, loss of memory, and, sometimes, loss of consciousness, can last anywhere from a few seconds to a few hours to a few days. This depends on the severity of the impact.
Sometimes, concussions last just a few moments. Other times, a person can be unconscious (knocked out or passed out) for a couple of minutes or longer.
Depending on the severity of the symptoms, concussions are grouped into 5 grades
In Grade 0 concussion, the symptoms include headache and difficulty in concentration. These usually clear up within a few minutes.
In Grade 1 concussion, the symptoms include brief confusion lasting less than a minute. Other symptoms like headaches and lack of concentration clears up within 15 minutes.
In Grade 2 concussion, the confusion/blurred vision last longer (more than a minute), and the patient may have dizziness, amnesia, confusion, ringing in the ears, and/or irritability.
Grade 3 is characterized by Loss of consciousness, although for less than a minute.
Grade 4 is characterized by Loss of consciousness for longer than a minute.
Medical specialists use a three-point system to determine the seriousness of a concussion. Based on this system, they design an appropriate treatment plan.
If a person who has had a concussion and has not recovered within a few months, he is said to be suffering from post-concussion syndrome. The person may show the same symptoms such as poor memory, confusion, headaches, dizziness, and irritability. However, in this case these symptoms will last for longer periods of time and may even be permanent.
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