Hi Aiofe
It's entirely up to you what you choose to tell the DWP, but the question to ask yourself is have you been left with any lasting issues from your neonatal birth that have an impact on your daily living or mobility now?
The DWP considers things that people have had for at least the three months prior to their application and that it will continue for at least the following nine months.
BIS
Nothing on this board constitutes legal advice - always consult a professional about specific problems