• Pedro Miguel Moura Guedes da Costa Silva Estudante do Mestrado Integrado em Medicina/Medical Student, Instituto De Ciências Biomédicas Abel Salazar, Porto, Portugal
  • Glória Maria Cardoso da Cunha Velho Assistente Graduada de Dermatologia e Venereologia/Graduated Consultant of Dermatology and Venereology, Professora Auxiliar Convidada de Dermatologia/Invited Professor of Dermatology, Disciplina de Clínica Médica do Mestrado Integrado em Medicina no Instituto Ciências Biomédicas Abel Salazar/Centro Hospitalar do Porto, Porto, Portugal
Keywords: Nail diseases, Onychomycosis/epidemiology, Psoriasis/complications, Prevalence


Psoriasis is a chronic disease, immune-mediated, affecting approximately 2% of the population. It results from a polygenic predisposition in combination with environmental factors, eg trauma, infection, or drugs. All forms of psoriasis may have nail involvement (40-45%), but sometimes this can occur alone (5%). Onychomycosis is an infection of the nail caused by dermatophytes, yeasts, or non-dermatophyte filamentous fungi; the most common agent is Trichophyton rubrum the (T. rubrum). It is still controversy regarding the higher or lower prevalence of onychomycosis in patients with psoriasis. Nail changes caused by psoriasis are sometimes clinically indistinguishable from those for onychomycosis, and we must make the differential diagnosis, because the treatment is different. There are several studies that analyze the possible predisposition of onychomycosis in patients with nail psoriasis and this literature review aims to analysis of these studies, published to date.


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How to Cite
Moura Guedes da Costa Silva, P. M., & Cardoso da Cunha Velho, G. M. (1). ONYCHOMYCOSIS AND NAIL PSORIASIS. Journal of the Portuguese Society of Dermatology and Venereology, 73(2), 211-218. https://doi.org/10.29021/spdv.73.2.367
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