My Daughter had the VNS since she was 2 1/2 years old, this will be her 2nd replacement.  

  She has grand mal and  petite, and is mentally delayed due to her seizures.

  One good thing is that her seizures are less with the VNS then when she didn't have it. she is also on 3 different medications and one of them is Dilantine.  and Keppra.  unfortunilty i forgot the 3rd one.  

     I found out just last week that her battery is running low and she has about at least  2 months of juice left. 

  for the past week she has been having problems sleeping and wakes up in the middle of the night screaming of pain in her head like having a bad headach.  i am not sure of this iis from the VNS.   if anyone is older and this happnes please reply back.