Psoriasis is a chronic skin disease in which afflicted individuals develop red patches with a scale-like appearance. The cause of psoriasis is a relatively simple one, but it is difficult to treat. The epidermal cells of an individual with psoriasis are dividing 5-10 times more frequently than they should be! This accounts for the excessive accumulation of cells that leads to the symptoms, as they cannot be sloughed off quickly enough to prevent buildup.
What type of drugs might be effective in sever cases of psoriasis?