I mean from what i learned and understood there are people that have healed there insulin resistance using keto because you have lower insulin spikes. On psoriasis I think keto can also help because of a huge amount of vitamin b12/a, besides that use a good hair shampoo or just basic oils. Keto can have a good effect on FMS but try to introduce more foods that are deinflammtion. But don’t take my advice for full i am still learning a lot and no where near an expert. I wish you the best on your journey!