My Granddaughter Who Is 10 Is Ill. I Belive She

My granddaughter who is 10 is ill. I belive she has Lyme disease. The doctors here in Oklahoma say it is not possible. She has a lot of symptoms such as , elevated fluid pressure in her brain ( it was 37 at one point I understand 15 is normal pressure), thyroid issues, joint pain and varrious other complaints that started suddenly last May. Her headaches are only temporarily helped by spinal taps , she has had 5 so far. They point to idyiopathic psuedo tumor as a diagnosis but it doesn't fit her symptoms. Is there any way that you can help? We are getting no where the doctors here.