No longer should psoriasis be measured as mild, moderate, or severe. That is according to the National Psoriasis Foundation Clinical Consensus on Disease Severity, published in the February 2007 Archives of Dermatology. The paper proposes a new way to classify the severity of the disease that takes other factors into account. Now the location of the psoriasis, type, patient's quality of life, and a diagnosis of psoriatic arthritis will also be considered when classifying the condition. The new report recommends two categoriespatients who can be treated with local therapies and those who are candidates for systemic and/or phototherapy. The foundation believes the new system will better reflect how patients are treated in clinical practice.