It helps along with other pain medication.

Do biologic improve joint pitting and splitting?

When I was a child my parents would put lard on my nails and than tie plastic bags around my hands. I was in so much pain. I'm not sure if it helped or not, but I stopped crying. I started using light therapy back in the 80's, that seem to help some. In the 90's it was Cyclosporine. The one thing that made my nail psoriasis go away was getting on biologics. My hands have never felt so good.

Yes and this is the thing I hate the most; once they split it is so painful. How you found anything that works!