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Chronic nodular prurigo (CNPG) is a chronic, inflammatory skin disease, characterized by intense and debilitating pruritus. The pathophysiology is not fully understood, and the condition is difficult to treat with no targeted therapies. The aim of this systematic review was to review the evidence of therapies for non-atopic CNPG and conduct a meta-analysis of the results. We conducted a systematic review of the literature concerning effect of treatment for non-atopic CNPG. Due to few randomized controlled trials (RCTs) and case series, the literature was unfortunately too sparse to conduct a meta-analysis of the results. Instead, we thoroughly report important data from the three existing RCTs and 6 case studies with more than 15 patients. Evaluated therapies include nemolizumab, aprepitant, topical therapy with hydrocortisone and pimecrolimus, thalidomide, UVA phototherapy, pregabalin, and naltrexone. Included RCTs and case studies all had a heterogeneous methodology making direct comparison almost impossible. There is sparse evidence for the currently used therapies for non-atopic CNPG. Several RCTs on new therapies are running or in the pipeline, hopefully providing new, effective, and targeted treatment possibilities for CNPG patients both with and without an atopic predisposition. © 2022 S. Karger AG, Basel.


Anne Sofie Frølunde, Malthe Alexander Knudsgaard Wiis, Hakim Ben Abdallah, Stine Elsgaard, Anna Kathrine Danielsen, Mette Deleuran, Christian Vestergaard. Non-Atopic Chronic Nodular Prurigo (Prurigo Nodularis Hyde): A Systematic Review of Best-Evidenced Treatment Options. Dermatology (Basel, Switzerland). 2022;238(5):950-960

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PMID: 35417906

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