Keto

Hi! I personally know of someone whose severe Psoriasis went away from eating a Keto diet and another person I know had theirs cleared on Carnivore diet. Has anyone else had the same experience? And if so, how long before you'd expect to see if it's working? I don't know how long to stick to Keto before changing course. It seems to go against so much that I've read about healing through diet...on Keto, I have dairy, nightshades, red meat. But I've previously cut those out before along with gluten, alcohol and sugar (which is the same on Keto) and no difference after I eliminated those foods for over 6 months.