My nails have always been paper thin but deep ridges like the one in the pic are usually from previous damage to the cuticle. A Dermatologist can help you manage your nails.

I don't have ridges but my nails and toenails just fall off randomly and I keep them painted and gel nails because they are so brown and discolored and brittle. I take prenatal vitamins to help

Thanks but no pain at all.

Thank you for your reply, I just wonder why it’s only on one thumb and not the rest of my nails. Take care Care. X