Abstract
OBJECTIVE: Perform the translation and cross-cultural adaptation of the severity scale to measure activity in patients with chronic prurigo: Prurigo Control Test (PCT) for the locality of Río de la Plata, Argentina.
METHODS: A cross-sectional study using a mixed-methods (qualitative and quantitative) approach was performed. The process involved seven stages: translation, expert reconciliation, back-translation into English, equivalence review, expert evaluation, cognitive interviews with patients, and development of the final version.
RESULTS: A Spanish version of the questionnaire was obtained. Eleven patients were interviewed. The median age was 70 years (IQR 59-75), and the median disease duration was 24 months. Correct comprehension of all items was achieved by 90% of the patients. The only modification made was the addition of the clarification "(de la piel)" [of the skin] following the term "cutánea" [cutaneous] to ensure comprehension across all educational levels.
CONCLUSIONS: The translated and adapted version of the PCT constitutes a simple, objective, and valuable tool for assessing disease control and therapeutic response in the daily clinical care of Spanish-speaking patients.
KEYWORDS: Chronic prurigo; Severity scale; Prurigo Control Test (PCT); Comprehension; Educational levels; Patients; Argentina.
References
1. Docampo-Simón A, Sánchez-Pujol MJ, Silvestre-Salvador JF. Chronic prurigo: an update. Actas Dermosifiliogr 2022; 113 (6): 563-574. doi:10.1016/j.ad.2021.11.001
2. Satoh T, Yokozeki H, Murota H, et al. Guidelines for the diagnosis and treatment of prurigo. J Dermatol 2021; 48 (1): e1-e18. doi:10.1111/1346-8138.15613
3. Ryczek A, Reich A. Prevalence of prurigo nodularis in Poland. Acta Derm Venereol 2020; 100 (11): adv00155. doi:10.2340/00015555-3518
4. Ständer S, Augustin M, Berger T, et al. Prevalence of prurigo nodularis in the United States of America: a retrospective database analysis. JAAD Int 2020; 2: 28-30. doi:10.1016/j.jdin.2020.10.009
5. Wagner A, Torre AC, Mazzuoccolo LD, Di Prinzio A, et al. Prevalencia del prurigo crónico en Argentina: un estudio descriptivo transversal. Rev Alerg Mex 2026; 73 (1): 58-65. doi: 10.29262/ram.v73i1.1580
6. Zeidler C, Pereira MP, Augustin M, Spellman M, et al. Investigator’s Global Assessment of chronic prurigo: a new instrument for use in clinical trials. Acta Derm Venereol 2021; 101 (2): adv00401. doi:10.2340/00015555-3746
7. Yosipovitch G, Reaney M, Mastey V, et al. Peak Pruritus Numerical Rating Scale: psychometric validation and responder definition for assessing itch in moderate-to-severe atopic dermatitis. Br J Dermatol 2019; 181 (4): 761-769. doi:10.1111/bjd.17744
8. Basra MK, Fenech R, Gatt RM, Salek MS, et al. The Dermatology Life Quality Index 1994-2007: a comprehensive review of validation data and clinical results. Br J Dermatol 2008; 158 (5): 931-947. doi:10.1111/j.1365-2133.2008.08482.x
9. Metz M, Zeidler C, Hawro T, et al. Development and validation of a patient-reported outcome measure to assess disease control in chronic prurigo. JAMA Dermatol 2024; 160 (2): 187-193. doi:10.1001/jamadermatol.2023.5146
10. Wild D, Grove A, Martin M, et al. Principles of good practice for the translation and cultural adaptation process for patient-reported outcomes (PRO) measures: report of the ISPOR Task Force for Translation and Cultural Adaptation. Value Health 2005; 8 (2): 94-104. doi:10.1111/j.1524-4733.2005.04054.x
11. Streiner DL, Norman GR, Cairney J. Health Measurement Scales: A Practical Guide to Their Development and Use. 5th ed. Oxford University Press; 2015.
12. De Tiedra AG, Mercadal J, Badía X, Mascaró JM, et al. Adaptación transcultural al español del cuestionario Dermatology Life Quality Index (DLQI): el índice de calidad de vida en dermatología. Actas Dermosifiliogr 1998; 89 (12): 692-700.

This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.
Copyright (c) 2026 Revista Alergia México
