Finger nail biting into skin?

i have been having an issue with my middle finger for the past few days. i THINK my fingernail has grown into it and is biting into the skin. what this always causes for me is that area kind of drys up just in that little corner/crevice. and than just a wee bit above where is bites in, a little all most extremely hardened piece of skin forms it's usually a brownish color and it irritates me and gives me pang in that area. obviously this has happened before but this one i cant use clippers to get out and i get clip the nail either because when i bend back that bit of skin it hurts like crazy. Anyeone know how to fix this THANKS!