Methotrexate and acitretin in pityriasis rubra pilaris: A retrospective cohort study

To the Editor: Pityriasis rubra pilaris (PRP) is a rare inflammatory cutaneous disorder. Although biologics are effective for PRP,1 their high costs can hinder access. Efficacy data for cost-effective treatments such as methotrexate (MTX) and acitretin are sparse.2 We evaluated MTX and acitretin in PRP.