nail infection

Hey all, I haven’t been doing nails for too long but I’ve very rarely received complaint of this kind A client has sent me this and I just wanna confirm what has actually happened to the nail. If you could let me know your thoughts it would be heavily appreciated. Thank you

Hi, About a month ago I had gels on and i noticed lifting on one of my finger nails. I saw all this sort of peeling and debris under the nail, so I cut it down and it looked horrible - photo attached when I removed the gel, the nail was like chalk way past the end of the free edge, it was just...