there is no recognized mental health disorder called "Diaper Dependent Personality Disorder" in any official diagnostic manuals such as the Diagnostic and Statistical Manual of Mental Disorders (DSM-5) or the International Classification of Diseases (ICD-10).
It is possible that new disorders may be proposed or recognized , but I do not have information on any developments beyond that point.
If you are looking for information on a specific condition, it is essential to consult the latest medical and psychological resources or seek advice from a qualified mental health professional. They can provide you with the most up-to-date and accurate information on mental health disorders and their diagnosis.