Medication adherence and health care costs associated with biologics in Medicaid-enrolled patients with psoriasis.

Background: Costs and patients' adherence related to biologics are important factors to consider while making informed decisions regarding therapy with biologics in psoriasis management.

Objective: To examine predictors of adherence related to biologics, total health care costs, and service utilization among psoriasis patients.

Methods: This was a longitudinal cohort study of psoriasis patients (<65 years old) enrolled in North Carolina Medicaid who were prescribed biologics (alefacept, efalizumab, and etanercept).