Does the FAA always require a neuropsychological assessment battery for applicants with a history of ADD?
If you have ever in your life been diagnosed with any mental health condition, such as ADD/ADHD, then the FAA presumes you to be mentally defective until proven otherwise to their satisfaction, by their own experts at your expense. They do not care what your personal doctor says, or what other pilots say.
You will need to get evaluations from a HIMS Psychiatrist and/or HIMS Neuropsychologist, which will likely take you months to arrange since there are only a few in the entire country. Then you will need a HIMS AME to process the paperwork and send it to OKC, which will spend a few months reviewing it to make sure the file is complete. Then your file will be sent to DC, where it will sit on the Federal Air Surgeon’s desk for several more months before he reviews your file. If all goes well, he will issue a Special Issuance medical, conditional on renewing the above evaluations every 6 or 12 months until he is eventually convinced you are mentally stable enough for a regular medical certificate. That may take up to 10 years, depending on your exact condition.
If your AME is not a HIMS AME, they will have no idea how this process works or what paperwork is required, so switch now and save yourself months of wasted time and money.