I am curious about investigating this further.
I've had psoriasis for 10+ years now (started around a similar time for me), spread on a bunch of my body.... luckily nothing too big or mean on my face or hands... but spread over a lot of areas. I have considered biologics... but I don't want to do that. This sounds like a (somewhat) low cost potential solution, as I have also noticed that my P gets better in the summer with more natural light exposure.

Was your product like one of these:
https://smile.amazon.com/Approved-Hand-held-Phototherapy-Disorders-Treatment/dp/B081S8SM31/ref=sr_1_1_sspa?keywords=uv+wand+for+skin&qid=1577983063&sr=8-1-spons&psc=1&spLa=ZW5jcnlwdGVkUXVhbGlmaWVyPUExTTJTUzVPMUw2SURRJmVuY3J5cHRlZElkPUEwOTI0NzYzMjZQNklMSUhTMFVMMyZlbmNyeXB0ZWRBZElkPUEwNzk3MzAyREk4OElWQ1JKSkg5JndpZGdldE5hbWU9c3BfYXRmJmFjdGlvbj1jbGlja1JlZGlyZWN0JmRvTm90TG9nQ2xpY2s9dHJ1ZQ==

Thanks again for sharing and posting - and continued good luck to you!