RT Journal Article SR Electronic T1 Psoriasis: A clinical update on diagnosis and new therapies JF Cleveland Clinic Journal of Medicine JO Cleve Clin J Med FD Cleveland Clinic SP 105 OP 119 VO 67 IS 2 A1 Camisa, Charles YR 2000 UL http://www.ccjm.org/content/67/2/105.abstract AB Psoriasis varies widely in its clinical expression, from a single fingernail pit to widespread disfiguring skin lesions and disabling arthritis. Treatments are divided into five levels, providing a framework for approaching this disease according to severity and recalcitrance to previous treatment. Powerful immunosuppressive drugs are showing some success in treating severe cases.