Palmoplantar pustular psoriasis: successful therapy with efalizumab after non-response to infliximab.

Palmoplantar pustular psoriasis (PPP) is a chronic inflammatory skin condition mainly characterized by recurrent eruptions of sterile pustules on erythematous skin; hyperkeratosis and fissures on the palms and soles are additional clinical features. Treatment options for PPP are unsatisfactory. We present a patient with a typical course of PPP that had previously received a broad range of topical and systemic antipsoriatic therapies. They all had to be discontinued due to ineffectiveness or side effects. Being aware of the high efficacy of infliximab in generalized pustular psoriasis, we initiated this therapy. An initial improvement was followed by a substantial flare after 7 months, during which a combination treatment of infliximab with methotrexate was administered. Only subsequent monotherapy with efalizumab led to complete clearing up of PPP after 10 to 12 weeks of treatment without any adverse effects. This indicates that efalizumab is potentially effective in PPP.