IMPORTANCE: The total cost of psoriasis in the United States is unknown. Defining the US economic burden of psoriasis is needed because it provides the foundation for research, advocacy, and educational efforts. OBJECTIVE: To determine the US economic burden of psoriasis from a societal perspective. EVIDENCE REVIEW: PubMed and MEDLINE databases were searched between January 1, 2008, and September 20, 2013, for economic investigations on the direct, indirect, intangible, and comorbidity costs of adult psoriasis in the United States. The base year costs were adjusted to 2013 US dollars using the Consumer Price Index for All Urban Consumers and multiplied by the estimated number of US patients with psoriasis in 2013 to determine the 2013 psoriasis cost burden. FINDINGS: Among 100 identified articles, 22 studies were included in the systematic review. The direct psoriasis costs ranged from $51.7 billion to $63.2 billion, the indirect costs ranged from $23.9 billion to $35.4 billion, and medical comorbidities were estimated to contribute $36.4 billion annually in 2013 US dollars. Patients with psoriasis would pay a lifetime cost of $11 498 for relief of physical symptoms and emotional health; however, intangible cost data are limited. The annual US cost of psoriasis amounted to approximately $112 billion in 2013. CONCLUSIONS AND RELEVANCE: The economic burden of psoriasis is substantial and significant in the United States.
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