Incidence and Prevalence of 73 Different Genodermatoses: A Nationwide Study in Sweden

Authors

  • Theofanis Zagoras Department of Dermatology and Venereology, Institute of Clinical Sciences, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden https://orcid.org/0009-0009-8624-5829
  • Rahime Inci Department of Dermatology and Venereology, Institute of Clinical Sciences, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden https://orcid.org/0000-0001-7123-3715
  • Despoina Kantere Department of Dermatology and Venereology, Institute of Clinical Sciences, Sahlgrenska Academy, University of Gothenburg and Region Västra Götaland, Sahlgrenska University Hospital, Department of Dermatology and Venereology, Gothenburg, Sweden https://orcid.org/0000-0001-9133-8581
  • Peter Holmström Department of Dermatology and Venereology, Institute of Clinical Sciences, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
  • Jenny Broström Department of Dermatology and Venereology, Institute of Clinical Sciences, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
  • Martin Gillstedt Department of Dermatology and Venereology, Institute of Clinical Sciences, Sahlgrenska Academy, University of Gothenburg, and Region Västra Götaland, Sahlgrenska University Hospital, Department of Dermatology and Venereology, Gothenburg, Sweden https://orcid.org/0000-0001-5033-5421
  • Sam Polesie Department of Dermatology and Venereology, Institute of Clinical Sciences, Sahlgrenska Academy, University of Gothenburg, and Region Västra Götaland, Sahlgrenska University Hospital, Department of Dermatology and Venereology, Gothenburg, Sweden https://orcid.org/0000-0002-5398-6200
  • Sirkku Peltonen Department of Dermatology and Venereology, Institute of Clinical Sciences, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden and Region Västra Götaland, Sahlgrenska University Hospital, Department of Dermatology and Venereology, Gothenburg, Sweden and Department of Dermatology and Allergology, University of Helsinki, and Skin and Allergy Hospital, Helsinki University Hospital, Helsinki, Finland https://orcid.org/0000-0003-0990-1430

DOI:

https://doi.org/10.2340/actadv.v103.12404

Keywords:

epidemiology, genetic skin disease, ichthyosis, incidence, neurofibromatosis, porokeratosis

Abstract

This retrospective registry-based cohort study aimed to estimate the incidence and prevalence of genodermatoses in the Swedish population and to analyse associated healthcare usage. Patients diagnosed with genodermatoses were identified from the patient registry of Sahlgrenska University Hospital (Gothenburg, Sweden) between 2016 and 2020. Clinical data from medical records were used to verify diagnoses recorded in the National Patient Registry (NPR). The NPR was then searched for International Classification of Diseases, Tenth Revision (ICD-10) codes Q80–82 and Q84 from 2001 to 2020. The local cohort included 298 patients with 36 unique genodermatosis diagnoses. Verification of these diagnoses in the NPR showed positive predictive values of over 90%. The NPR search yielded 13,318 patients with 73 unique diagnoses, including ichthyoses (n = 3,341; 25%), porokeratosis (n = 2,277; 17%), palmoplantar keratodermas (n = 1,754; 13%), the epidermolysis bullosa group (n = 1011; 7%); Darier disease (n = 770; 6%), Hailey-Hailey disease (n = 477; 4%) and Gorlin syndrome (n = 402; 3%). The incidence and prevalence of each diagnosis were calculated based on the nationwide cohort and are reported. A total of 149,538 outpatient visits were registered, a mean of 4.6 visits per patient. This study provides a valuable resource for the epidemiology of genodermatoses by reporting on the incidence and prevalence of 73 different genodermatoses.

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Published

2023-08-24

How to Cite

Zagoras, T., Inci, R. ., Kantere, D., Holmström, P., Broström, J., Gillstedt, M., … Peltonen, S. (2023). Incidence and Prevalence of 73 Different Genodermatoses: A Nationwide Study in Sweden. Acta Dermato-Venereologica, 103, adv12404. https://doi.org/10.2340/actadv.v103.12404