A Spectrum Including Features of Psoriasis and Pityriasis Rubra Pilaris

Heterozygous mutations in CARD14 have been shown to be associated with psoriasis and familial pityriasis rubra pilaris (PRP). Many patients with CARD14 mutations display features of both disorders, which can result in diagnostic uncertainty. In addition, these eruptions are often recalcitrant to conventional psoriasis therapies such as methotrexate, oral retinoids and TNF-α inhibitors.

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