Mercè Aguilar Sánchez (Spain)

Hospital Universitario de Bellvitge Microbiology

Author Of 1 Presentation

TINEA UNGUIM PRODUCED BY NANNIZZIA NANA ( MICROSPORUM NANUM) IN THE SOUTH METROPOLITAN AREA OF BARCELONA

Date
05.07.2021, Monday
Session Time
07:00 AM - 07:30 PM
Room
Publications Only
Lecture Time
07:00 AM - 07:00 AM

Abstract

Abstract Body

1.BACKGROUND AND PURPOSE

Onychodystrophies are very common. More than 50% are mycotic. In feet most of them are dermatophytes, especially T. Rubrum. Other causes : psoriatic,traumatic,vascular,lichen...

Nannizzia nana is a zoophilic and geophilic dermatophyte fungus with a worldwide distribution. It causes ringworm in pigs and is in the soil of farms. In humans it produces rare cases of tinea corporis and capitis. Tinea unguium is very rare.

We describe the first case of onychomycosis caused by Nanizzia nana (Microsporum nanum) in our setting.

2.METHODS

35-year-old woman from a rural area of Honduras and resident in our country for more than 1year. Major nail dystrophy in the first toe of both feet for 5 years and without improvement after several treatments.

3.RESULTS

Nail samples are sent to the laboratory, plated in DTM and SGC medium (BioMérieux) and incubated at 30*C. At 9 days a colony grows whose microscopic examination with lactophenol blue allowed to identify as Nannizzia nana.

Lesions disappeared after treatment with oral terbinafine.

Reviewing the literature there are hardly any published cases of Nannizzia nana as an agent of Tinea unguium

4.CONCLUSIONS

1-Relapses and resistance to treatment, along with the need for a correct differential diagnosis, make recommendable mycological examination of onychodystrophies.

2-Epidemiological antecedents: contact with pigs and life in a rural environment are very important for the diagnosis of this dermatophytosis.

3-This is the first isolation of Nannizzia nana in our environment. It coincides with two published cases of patients from South America

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