Following a blunt injury to the head, a 22-year-old female is confused and complains of a severe headache and nausea. on the basis of these signs and symptoms, you should be most concerned with the possibility of:

If someone shows these symptoms, they most likely have a concussion. Some more symptom that a concussion can have is: blackout, fatigue, poor balance, sleep disturbance or sleepiness, vomiting, irritability, mild-depression, ringing in the ears, and sensitivity to light.

A concussion and you should see the doctor 

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