The aim of this article is to examine the impact of the classificatory revolution introduced by ICD-11 and of the growing phenomenon of late diagnoses of neurodevelopmental disorders – autism spectrum disorder (ASD) and ADHD – on adjudication of consensual incapacity under Canon 1095, 2°-3° of the 1983 Code of Canon Law. The author argues that canonical doctrine and jurisprudence still operate with a conceptual grid largely abandoned by contemporary psychiatry, and that a diagnosis made after the wedding – sometimes only after the breakdown of the marriage – raises specific evidentiary problems so far unexplored in Polish canon law scholarship. The psychiatric part outlines the paradigm shift in classification and the clinical picture of adult ASD and ADHD, with particular attention to symptom masking in women. The canonical part discusses the retrospective nature of adult neurodevelopmental diagnosis and its twofold evidentiary significance, the standard for assessing expert opinions, the criteria for distinguishing the grounds under 2° and 3°, and the boundary between difficulty and incapacity with regard to neurodivergent persons. The article concludes with postulates for tribunal practice.