hi
that is very irresponsible of your mom not to tell the doctor the truth about the previous head trauma IMO
The aim should be to get you the right kind of help and so the doctors need to know your full history
if you click this link it will take you to our special forum for head injury/concussion stuff and the members there can give you help too
http://neurotalk.psychcentral.com/forum92.html
I will let them know of your thread here too
I really hope you will talk to your mom and let her know you need proper treatment and so you have to be able to be honest with your doctors