Onychomycosis Not More Prevalent in Patients With Psoriasis Than General Population
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Onychomycosis Not More Prevalent in Patients With Psoriasis Than General Population

PARIS -- July 7, 2010 -- Researchers using culture tests showed that onychomycosis is not more prevalent in patients with psoriasis compared with non-psoriatic patients. Results were presented at the 3rd International Congress on Psoriasis.

"With our study we set out to determine the incidence of onychomycosis in affected nails among psoriatic and non-psoriatic patients", said lead study author Skaidra Valiukeviciene, MD, Hospital of Kaunas University of Medicine, Kaunas, Lithuania. "There is some controversy about the incidence of onychomycosis in patients with psoriasis compared with non-psoriasis patients."

The study included 559 patients of which 168 were males and 391 were females; 30 had psoriasis.

According to the study, the incidence of onychomycosis was determined according to positive results of culture tests among patients with psoriasis was 7 out of 30 (23.3%) compared with 125 out of 529 (23/6%) among non-psoriatic patients (P > .05).

Among patients with psoriasis, dermatophytes were detected in 71% of patients and in 2 remaining cases yeast and yeast-like fungi were found.

Among non-psoriatic patients dermatophytes, yeast and mould were detected in 66,43 and 16 cases, respectively. The sensitivity of the microscopic examination versus culture to identify dermatophytes was 87.3%. For yeast it was only 18.6%.

Onychomycosis was detected in less than a third of the patients with clinically affected nails.

"We found no difference in the incidence of onychmycosis and the spectrum of fungal infection among psoriatic and non-psoriatic patients," said Dr. Valiukeviciene. "We found the culture test to be an important technique in diagnosing onychomycosis and selecting systemic treatment."

SOURCE: 3rd International Congress on Psoriasis

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