This is a very important conversation to have. Most persons with disabilities mental or other types of disabilities fear disclosing their disabilities for fear of being rejected in their job applications. Its always a dilemma. You may fail to disclose and the truth comes out on the day of the interview and the would be employer may not be at a position to provide reasonable accommodation at the time even when its needed.
Disclosing that you have a disability in form of Neurodiversity could also be a blessing especially with the upcoming opportunities geared towards persons with disabilities such as the Autism Hiring Program by Microsoft and audit firm Ernest and Young (EY).
Depending on the job requirements and qualifications, it is encouraged to disclose the disability early enough. Should one be discriminated against because of their disability, you could seek legal redress and the law will take its course.
Thats encouraging to hear EY do that. Yes one should disclose they have invisible disabilities as early as possible perhaps when being hired.