I think I've told you what it was like for me in another thread? Anyway, just for those that have it, you go into remission during pg because while you are pg your body goes into an immuno-supressed state to allow the baby to grow, otherwise it would abort the baby, hence why you see an improvement around the end of the 1st trimester when baby is relying on the placenta. Psoriasis is an auto-immune disease and this is why most women get some degree of remission during pg.

*snap* LOL. It could be that the UV treatment is starting to work too and you will get some white pigmentation from where the plaques have been.