I really feel for you Peeved. My dh has this condition quite badly, it is all over his arms and legs, with patches on his back and chest, and in his hair. There is hardly a part of his body that hasn't been touched by it. Whenever he wears t-shirts or shorts, someone always comments on it. He has been asked if he has been burnt, and, at swimming pools, asked if it is contagious! He is now used to dealing with the stares and questions, although it can still upset him.
It is hereditary, so did anyone from your family suffer from it? We are concerned about dd of course, as dh's sister also suffers from psoriasis, and I think it's worse for a girl. But you can't live life thinking 'What if?' can you?
Dh has tried everything going to treat it, including Chinese herbal remedies, dietary changes, vitamin supplements, herbalism, Aloe Vera, etc, etc. The only thing that helps him is Dovonex which he gets on prescription. He was offered Ultra Violet treatment but they only operate during weekdays, and as you have to go every week for around 6 weeks, we knew his employers would never agree to it. However we have heard that it works for some people.
I hope you are able to find something that works for you. My advice is to try everything. Psoriasis, like most things, is individual and what works for one person may not work for you. Ask your dermatologist for a list of treatments and work your way down it until you hit on something that eases it. One thing I would say is not to waste your money on Chinese remedies, they are very expensive, taste disgusting and we have not heard of anyone who has eased it this way. Let us know how you get on. I can only imagine how you feel as I feel it for my dh too, people don't realise how dehabilitating it can be.