Nails growing under other healthy nails

[RosieTheCat]

Two months ago we visited my DGPs, they took her into a cafe while I was in a shop next door she started wailing blue murder which is unlike her, turns out a finger nail had snapped in half possibly caught against the table and chair

Last month went on holiday with the PIL Dd was very unsettled crying blue murder same thing different finger nothing to have caused it MIL manages to remove the nail, it looked like a new nail had started to grow under it so we guessed it may have happend a few days previous

It's now very obvious that Dds big toenails and 2 other toes have new nails growing under the old ones pushing them up and off
Her nails on the big ties have always been weird bending up at the edges ever since she was born but Dps feet are awful so I just figured she inherited it from him

6 months ago she was reacting to dairy so we restricted it less bottles ect and stupidly didn't find other calcium rich items to substitute 2 weeks ago we tried her with cows milk again and she's fine so has been back on dairy as if nothing happened could this be related or could it be something else

[TheHouseOnTheLane]

I've heard this can happen after a viral infection...has she had anything like that?

[RosieTheCat]

No nothing recent last viral was about a year ago, lots of other illnesses though a chest infection 3 weeks ago and she gets croup a lot 3 times in the last 6-7 months
I'll be taking her to the Drs once the mad after Christmas rush of appointments is over just hoping I can do something in the meantime