The sun is the best medication for mine. We get about 6 months of winter here in BC. So it's tanning beds for me in the winter. But the pandemic has put a pause on that. Aside from sun - Get on a Vitamin D supplement.Eat anti-inflammatory foods. Psoriasis is an autoimmune disease that should be treated from inside the body. With that being said Dermatologist deals with skin issues psoriasis shows up on your skin because of what’s happening inside of your body so get on a regimented supplement routine, sunlight, lots of water, destress, and you'll see an improvement