I'm so sorry to hear about your daughter's troubles.

You might want to read about or ask a specialist (MD) about something called IICP. It's increased intracranial pressure and it rarely occurs with people who sustained a concussion, but more frequently in people who have sustained multiple concussions, especially when another has yet to be resolved - I think this is what second impact syndrome is caused by, but instead of a slow increase in intracranial pressure it is rapid. (Even though I had it after just one concussion and I've read a lot about it, it still confuses me since I'm a layman.)

The pain she has behind the eye is what leads me to suggest this. The iicp that was the bane of my existence for six months was suspected, discovered and alleviated because of the intense pain I felt behind my eye. I had horrible and ongoing headaches that increased in severity for months before I started to experience any pain behind my eye.

IICP is a cyclical condition, so it gets worse over time. It's literally pressure inside the skull that just keeps increasing and increasing. It can be a slow process, but that *might* be why she's just experiencing this new pain behind her eye.

As the pressure increases, so does the cyclical process that increases it, so depending on how much pressure is there and the longer it is left untreated, it can take a while before it gets super bad but it can be life threatening and it can also cause permanent blindness and other very unpleasant side effects - like continued damage to the soft tissue of the brain being pressed on by it.

http://www.ihrfoundation.org/intracr...nsion/info/C17

Much luck!