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Fungal Infections and Nail Psoriasis: An Update
Aikaterini Kyriakou1, Sofia-Chrysovalantou Zagalioti2, Myrto-Georgia Trakatelli1
12nd Department of Dermatology and Venereology, Medical School, Aristotle University of Thessaloniki, 56403 Thessaloniki, Greece.
Abstract:
The relationship between psoriasis and onychomycosis is controversial, and the exact nature of this association remains to be clearly elucidated. In healthy nails, the compact nail plate acts as a barrier, preventing any infection. In psoriatic nails, the nail plate involvement, together with abnormalities in the blood capillaries, may lead to decreased natural defenses against microorganisms. Moreover, onycholysis (detachment of the nail plate) induces a humid environment that may favor fungal proliferation. Treatment with immunosuppressive drugs may additionally enhance onychomycosis. In this comprehensive review, we present data regarding the incidence and pathogenic action of dermatophytes and other fungi in the development of fungal infection in psoriatic nails.
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