Tinea Capitis in the Paediatric Population in Milan, Italy: The Emergence of Trichophyton violaceum

ABSTRACT One strain of Trichophyton rubrum CMCC(F)T1i (=CBS 139224) isolated from onychomycosis and one strain of Trichophyton violaceum CMCC(F)T3l (=CBS 141829) isolated from tinea capitis in China were whole-genome sequenced by Illumina/Solexa, while the former was also sequenced by Pacific Biosciences sequencing in parallel.

Download Full-text

Trichophyton violaceum: An Emerging Pathogen in Southern Switzerland

Dermatology ◽

10.1159/000501271 ◽

2019 ◽

Vol 235 (5) ◽

pp. 434-439 ◽

Cited By ~ 1

Author(s):

Elizabeth Gaviria Morales ◽

Matilde Iorizzo ◽

Gladys Martinetti Lucchini ◽

Carlo Mainetti

Keyword(s):

Retrospective Analysis ◽

Medical Records ◽

Tinea Capitis ◽

Correct Diagnosis ◽

Epidemiological Data ◽

Emerging Pathogen ◽

Trichophyton Violaceum ◽

Appropriate Treatment ◽

Mycological Examination ◽

Epidemiological Trends

Background: Trichophyton violaceumis an anthropophilic dermatophyte, endemic in Africa and recently an emerging pathogen in Europe. Objective: To perform a retrospective analysis of dermatophytoses due to T. violaceum between 2007 and 2018, in order to evaluate epidemiological trends in Southern Switzerland (Ticino). Methods: We reviewed all medical records of patients affected by dermatophytosis due to T. violaceum between January 2007 and December 2018 in Bellinzona (Ticino, Switzerland). Results: Dermatophytoses due to T. violaceumwas diagnosed in 44 patients, 33 of which were in the last 4 years. The most affected sex was female (25/44) and the most frequent diagnosis was tinea capitis (30/44). The majority of tinea capitis patients were children younger than 13 years of age (27/30). The main source of contagion were people from endemic areas, especially from Eritrea. Conclusion: In Southern Switzerland T. violaceumhas been rarely diagnosed before 2014. Its increased occurrence seems linked to increased migratory flows from Eritrea. Since it is responsible mainly for tinea capitis, with most of the time no clearly defined alopecia patches, it is important to consider it as a possible diagnosis when facing scalp scaling. Tinea capitis due to T. violaceum is a benign affection, but if left untreated it can spread epidemically, especially among children in schools and kindergartens. Mycological examination is then required, not only for a correct diagnosis and epidemiological data, but also for planning the appropriate treatment.

Download Full-text

Trichophyton violaceum infection seen as tinea capitis in a child and in his mother.

Japanese Journal of Medical Mycology ◽

10.3314/jjmm1960.30.135 ◽

1989 ◽

Vol 30 (2) ◽

pp. 135-138 ◽

Cited By ~ 3

Author(s):

Takao Sano ◽

Takuro Katoh ◽

Saburo Kagawa ◽

Izumi Yamamoto

Keyword(s):

Tinea Capitis ◽

Trichophyton Violaceum

Download Full-text

Features of tinea capitis caused by Trichophyton violaceum and Trichophyton soudanense

Journal of the American Academy of Dermatology ◽

10.1016/j.jaad.2017.04.545 ◽

2017 ◽

Vol 76 (6) ◽

pp. AB140

Keyword(s):

Tinea Capitis ◽

Trichophyton Violaceum ◽

Trichophyton Soudanense

Download Full-text

Tinea capitis em adulto por Trichophyton violaceum no Brasil: relato de um caso e revisão da literatura

Anais Brasileiros de Dermatologia ◽

10.1590/s0365-05962008000600008 ◽

2008 ◽

Vol 83 (6) ◽

pp. 544-548

Author(s):

Gustavo da Silva Rodrigues ◽

Flávio de Mattos Oliveira ◽

Eduardo Figueiredo Pereira ◽

Rosana Ce Bella Cruz

Keyword(s):

Tinea Capitis ◽

Trichophyton Violaceum

Tinea capitis, tinha do couro cabeludo, é dermatofitose causada por fungos dos gêneros Trichophyton e Microsporum. Apresenta várias formas clínicas e é quase exclusiva de crianças. Raramente acomete adulto. Relata-se um caso de tinea capitis por T. violaceum em mulher com 65 anos de idade e comentam-se os aspectos nosográficos dessa dermatofitose no Brasil.

Download Full-text

Epidemiology of Fungal Scalp Infections in the West of Scotland 2000 – 2006

Scottish Medical Journal ◽

10.1258/rsmsmj.54.2.13 ◽

2009 ◽

Vol 54 (2) ◽

pp. 13-16 ◽

Cited By ~ 5

Author(s):

CL Alexander ◽

L Brown ◽

GS Shankland

Keyword(s):

General Practitioners ◽

Fungal Infections ◽

Paediatric Population ◽

Trichophyton Tonsurans ◽

The West ◽

Trichophyton Violaceum ◽

Clinical Mycology ◽

Fungal Hyphae ◽

The Uk

Background Fungal infections of the scalp commonly affect the paediatric population and are caused by dermatophytes which have the ability to invade the keratinised structures of skin, hair and nails. This study analyses the changes in the epidemiology of fungal scalp infections in the West of Scotland during the period 2000 – 2006. Methods Skin and hair from scalp specimens sent by General Practitioners and Dermatologists throughout the West of Scotland were examined microscopically for the presence of fungal hyphae and/or spores and cultured to determine the identity of the fungi. Results The most common dermatophyte to be isolated from scalps during 2000–2006 was Trichophyton violaceum with 29 reported cases followed by 23 cases of Trichophyton tonsurans infection. During 2000-2002, over 90% of patients were British but during 2003–2006, greater than 50% of patients were of non-UK origin. The majority of T. violaceum and T. tonsurans infections during this study were from patients originating in either Africa or Pakistan and were from people known to be seeking asylum in the UK. Conclusions The overall increase and the change in pattern of reported fungal scalp infections in the West of Scotland may be explained by the migration of people to Scotland from Africa or Pakistan where T. violaceum and T. tonsurans are endemic. The increase in numbers of infections in the later period of this study reflects an increase in the awareness of General Practitioners and Dermatologists to send samples to Clinical Mycology.

Download Full-text

Trichophyton violaceum. [Descriptions of Fungi and Bacteria].

IMI Descriptions of Fungi and Bacteria ◽

10.1079/dfb/20056400646 ◽

1980 ◽

Author(s):

P. M. Stockdale

Keyword(s):

Middle East ◽

Lymph Nodes ◽

Geographical Distribution ◽

Tinea Capitis ◽

Tinea Corporis ◽

Tinea Unguium ◽

Inflammatory Lesions ◽

Trichophyton Violaceum ◽

Tinea Barbae ◽

Subcutaneous Tissues

Abstract A description is provided for Trichophyton violaceum. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. HOSTS: Primarily a pathogen of man (causing mycoses). Also recorded from buffalo, cat, cattle, dog and mouse (RMVM 6, 3187; 10, 505). The cat, dog, guineapig, monkey and mouse have been infected experimentally. The horse, fowl and pigeon have been implicated as hosts of T. violaceum. DISEASE: Ringworm (dermatophytosis, tinea). The scalp (tinea capitis), beard (tinea barbae), body (tinea corporis) and nails (tinea unguium, onychomycosis) may be infected. Infected hairs show an endothrix type of invasion and do not fluoresce under Wood's light. The hairs may break and curl producing 'black dots' on the scalp (also sometimes produced by other endothrix Trichophyton species). Inflammatory lesions (occasionally with the development of kerion), scarring and alopecia and, occasionally, favus-like lesions may occur. Infections of the subcutaneous tissues, lymph nodes, brain, bones and other internal tissues have been reported (RMVM 3, 1441; 4, 716; 9, 677; 11, 708; 12, 1847; 13, 961, 1572). GEOGRAPHICAL DISTRIBUTION: Worldwide. A dominant cause of scalp ringworm in S. and E. Europe, the Middle East, N. Africa, parts of Central and E. Africa, S. Africa and Asia (RMVM 10, 602; 13, 1558).

Download Full-text