My ds (6) has finally got a date for assessment for ASD especially PDA. I do not know what to expect or what will happen. I am a single parent and his dad wants nothing to do with him so am just going on my own with ds. Will tell ds we are going as he gets very aggressive and cannot stand doing/ going any where different. Please help if anyone can, all i have is a letter with a date and time on, no clue what will happen!