You can to fight psoriasis.

As with a success will, forces,trust you can fight his. Am begun to cure his with a visiting to specialists and finding hope. but theirs advices are care,poor and nothing good, am lied in skin hospital, cured, but after left his am decided at home to self cure. Am taken for base advices American doctor Pegano, as his cure added in herbs. Am stewed at bath for two times/week with broom, after taken baths with chelidonius, leonurus, nettle, humulus, mint, valeriana, chamomile, melissa, bidens and dried meadow straw.
Good calming baths of pines cones and twigs. They are cleaning skin and relaxing you, and in ater pores doing an own functions for secretion, breath, and helping for lungs and kidneys, and blood circulation normalizing.

And temperatures for baths are C38, and keeping for 25 minutes.And for bowel s function  better am used roots of dandelion, chicory, petroselinum, seeds of dill, dill, pumpkin seeds.
And with psoriasis avoiding caffeine, drink herbs of tea are benefit of thyme, agrimony, hibiscus, crataegus, hypericum, fl. tilia, oregano, leaves currant, raspberry.
And here you can take sun baths,swim in local lakes,where are much growing lemna, not an importance visit for sea, and drink thyme of one tbl.sp. dried herb add in glass of the hot water, infuse at close dish within a hour, filter, use one tbl.sp. for 4 times/day.

And good cure for you is tilia s tar.