there is no specific psychological disorder associated with people who have their birthday on their birthday number (month/day). The date of one's birthday is a common occurrence and not considered a psychological disorder. It is simply a coincidence that happens once a year for everyone.
It's worth noting that there are various psychological disorders and conditions related to personality, mood, behavior, anxiety, etc. However, the occurrence of one's birthday on the same month and day each year is not among them. If there were any developments in the field of psychology , I wouldn't be aware of them.
If you have specific concerns or questions about psychological disorders or conditions, it's essential to consult with a qualified mental health professional who can provide accurate and up-to-date information based on the latest research and understanding in the field of psychology.