Related Experiment Video
Updated: Feb 9, 2026

Author Spotlight: Self-Assessment Protocol for Predicting Psoriatic Arthritis in Psoriasis Patients
Published on: March 1, 2024
Epidemiology of Psoriasis and Psoriatic Arthritis in Italy-a Systematic Review
Francesca Prignano1, Veronica Rogai2, Elisabetta Cavallucci3
1Section of Dermatology, Department of Surgery and Translational Medicine, University of Florence, Florence, Italy.
Purpose Of Review:
Understanding prevalence of diseases within specific regions of a country is important for optimal allocation of healthcare resources/funds. We performed a systematic review to obtain a clearer picture of the epidemiology of psoriasis and psoriatic arthritis across and within specific regions of Italy.
Recent Findings:
Prevalence of psoriasis in specific regions showed more variability (0.8-4.5%) than that in the total population (1.8-3.1%). Prevalence of psoriatic arthritis in the general population was reported for only two regions, Chiavari (0.09%) and Marche (0.42%). All other studies reported prevalence of psoriatic arthritis in patients with psoriasis in single centres and Italy-wide (4.7-47.1%). Prevalence of psoriatic arthritis was highest in patients with nail and/or scalp psoriasis and/or intergluteal/perianal region involvement. Based on current available data, these conditions appear to affect a substantial number of people and will likely have an important impact on the Italian healthcare system.
Related Concept Videos
Review and Preview
Percentiles are a type of fractile that partition data into...
Review and Preview
Introduction to Epidemiology
Causality in Epidemiology
Study Designs in Epidemiology
Observational studies are those where the researcher does not intervene but rather observes natural variations. They include cross-sectional, cohort, and...
Confounding in Epidemiological Studies

