People who have suffered concussions are often unaware of the extent of the injury. Some common symptoms for a mild Traumatic Brain Injury (TBI), or concussion, can include:

• dizziness
• headaches
• nausea
• memory problems
• trouble concentrating
• behavioral changes (confusion, irritability)
• light and noise sensitivity
• a ringing noise in the ears
• feeling more tired than usual
• lacking motivation.

In more serious cases of moderate to severe TBI, the symptoms can also include even more troubling symptoms:

• loss of consciousness
• constant headache
• repeated nausea with vomiting
• difficulty walking and speaking
• memory loss including not remembering the events preceding the head trauma
• weakness in other body parts
• pupil dilation in one eye
• bodily fluids coming out of the nose or ears