Shaking and fainting

My 12 year old daughter has had visibly shaking hands since she was a toddler. Her pediatrician assured me that she was fine, maybe just a little nervous. She sweats alot when she is sleeping and recently started fainting. (actually sweats enough to make her hair wet) She has fainted  twice in the past 6 months. The first time she fainted she had just cut her finger so we thought seeing her own blood brought on the spell. But the next time she fainted she was just casually sitting in a chair and said she felt sick to her stomach, she got up to run to the bathroom to vomit and fainted halfway there. She said her head hurt afterwards but did not hit her head. I would appreciate any input anyone may have. I feel like her doctor isnt taking this seriously enough.

[halbashes]

This sounds very much like a form of Dysautonomia.  Has your daughter ever had a Tilt Table Test?