title: Paradoxical psoriatic arthritis in a patient with rheumatoid arthritis treated by TNFα blocker.
authors.affiliation: Université de Lyon, Department of Dermatology, Hôpital Édouard-Herriot, 69003 Lyon, France. Electronic address: axel.villani@chu-lyon.fr.
authors.forename: Axel Patrice
authors.initials: AP
authors.lastname: Villani
authors.affiliation: Université de Lyon, Department of Dermatology, Hôpital Édouard-Herriot, 69003 Lyon, France.
authors.forename: Laura
authors.initials: L
authors.lastname: Weiler
authors.affiliation: Université de Lyon, Department of Dermatology, Hôpital Édouard-Herriot, 69003 Lyon, France.
authors.forename: Denis
authors.initials: D
authors.lastname: Jullien
authors.affiliation: Inserm UMR1033, Université de Lyon, Department of Rheumatology, Hôpital Édouard-Herriot, Hospices Civils de Lyon, 69003 Lyon, France.
authors.forename: Roland
authors.initials: R
authors.lastname: Chapurlat
authors.affiliation: Inserm UMR1033, Université de Lyon, Department of Rheumatology, Hôpital Édouard-Herriot, Hospices Civils de Lyon, 69003 Lyon, France.
authors.forename: Cyrille
authors.initials: C
authors.lastname: Confavreux
mesh_terms: D000368:Aged; D018501:Antirheumatic Agents / Q000009:adverse effects* / Q000627:therapeutic use; D015535:Arthritis, Psoriatic / Q000139:chemically induced*; D001172:Arthritis, Rheumatoid / Q000188:drug therapy*; D000068800:Etanercept; D005260:Female; D005938:Glucocorticoids / Q000008:administration & dosage; D006801:Humans; D007074:Immunoglobulin G / Q000009:adverse effects* / Q000627:therapeutic use; D008875:Middle Aged; D018124:Receptors, Tumor Necrosis Factor / Q000627:therapeutic use; D014409:Tumor Necrosis Factor-alpha / Q000037:antagonists & inhibitors*
chemical_list: D018501:Antirheumatic Agents; D005938:Glucocorticoids; D007074:Immunoglobulin G; D018124:Receptors, Tumor Necrosis Factor; D014409:Tumor Necrosis Factor-alpha; D000068800:Etanercept
keywords: Nail psoriasis; Palmo-plantar pustulosis; Paradoxical psoriasis; Psoriatic arthritis; Rheumatoid arthritis; TNF-α blocker