Skin overgrowing under your skin: what causes it and how to treat it?

#3 – Psoriasis

This skin condition is also associated with this overgrowing that causes sore skin under fingernail. Nail psoriasis can affect many elements of the nail. Since this disease is basically the overgrowing of skin cells, it’s normal that there’s a correlation between both.

In this case, the skin under the nails will become thick, discolored, and chalky. It can end up separating the nail from the skin if not treated.