psoriasis is an autoimmune and recurrent chronic inflammatory skin disease. about 1-3% of the world wide populations are affected. the characteristic features are hyperprolifration of keratinocytes leading to redness, thickening and scaling of epidermis followed with itching and appearance of the lesions which in most cases bother the patients medically and psychologically. psoriasis is symptom...

The Zingiberaceae, the largest family in the Zingiberales, comprises nearly 50 genera and 1,000 species and is pantropical, concentrated mainly in the old world, chiefly in Indomalaysia. Members of the family yield spices, dyes, perfumes, medicines and a number of ornamental species are cultivated for their showy flowers. Recently this plant has acquired great importance in the present-day worl...