Nail problems eight years after shut in door

Patient: Hi,About eight years ago I was clever enough to get my fingers shut in a door. Whilst at the time all my nails went bruised, fell off and healed there is one nail that has neve really healed. It has always been a bit dented and has kind of grown ‘funny’ but not noticable to anybody else.Within the last couple of weeks it does feel a tiny bit uncomfortable and appears to be coming away from the bed a bit. Maybe I’m being paranoid but I just want to make sure its nothing more serious?Picture attached.Thanks in advance.

Doctor: