SENCo is Special Educational Needs Co-ordinator. There'll be one in your school.
ASD is Autistic Spectrum Disorder and AD/HD is Attention Deficit/Hyperactivity Disorder.
To us, of course, she's just dd, but we couldn't work out why she was having certain difficulties with learning and also with maintaining friendships, given that she's of reasonable intelligence. When we started to look into it all, and put things together we felt we should seek medical help as the school were also noticing that her achievment wasn't matching her potential ability and that socially, she is rather behind her peers regarding picking up non-verbal cues etc.
Perhaps another coffee is in order!