Diagnosis and Treatment of Onychomycosis in Psoriasis Patients: A Single-Center Cohort Study.

One hundred thirty-nine psoriasis patients with suspected onychomycosis were referred for mycological testing (46.8% female, median age 62 years), onychomycosis was diagnosed in 67.6% of cases.

Fifty-one point one percent of patients were on systemic psoriasis treatments, 60.6% of them receiving biologic therapies.

Trichophyton rubrum was the most prevalent (81.3%) isolated fungi of all positive cultures.

Fifty-one patients received systemic antifungal treatment, with 47.1% receiving terbinafine and 52.9% fluconazole.