Skin cancer and psoriasis

[Caroline]

I would suspect the higher incidence of skin cancers in more severe cases of psoriasis were possibly due to UV treatments and the fact in my case that I expose my skin to the sun at every opportunity to try to rid myself of the disease...
It's a simplistic view of mine and I wonder if in the study they took account of treatments

Indeed, you cannot see a clear distinction between the UV treated ones, the systemic treated ones and the non treated ones.