16 year old cousin has been having Massive headaches short term memory loss, unable to concentrate at time, cant sleep well, headaches wake her up, personality changes, dizziness, loss of balance, lightheaded, food patters change, dont feel like doing things...

Symptoms came after a two motorcyle crashes. One of which left her helemet cracked. She had no broken bones so her grandparents figured she was ok. ( i know stupid right) well its four months later and all the doctors say is that its stress related. Anyways if anyone has any solutions please please let me know.

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Also she had an Mri done which showed up clean..

I belive somthing is really wrong.. the docotors just can't figure it out. This is or was a very happy go lucky kid..

Can you get some other opinions? She is exhibiting classic post-head-injury symptoms. She probably had severe concussion and her brain may have been swollen for a time. It probably wouldn't show up after this length of time, but she could probably do with some rehab. therapy. Try to get her re-assessed. Good luck, Sera