7/17/2011 1 Dermatophyte Infections The above student authors generated this web page presentation as an assignment in Dr. Cooper’s Medical Mycology course at Except for the indicated copyrighted material included within this electronic document, this web page is an intellectual product of the above students and Dr. Cooper. This page may be used for educational purposes only. Any other use requires the permission of the above authors as well as Dr. Cooper ([email protected]). Presentation Developed By: Jenee Thurston, Brittany Seman and Adam Speerstra July 17, 2011 1 BIOL 4849: Medical Mycology Tinea Capitis Ringworm of the scalp Etiologic Agent and Taxonomy • M. Canis, T. Tonsurans, M. Nanum July 17, 2011 2 BIOL 4849: Medical Mycology M. Canis T. Tonsurans M. Nanum Kingdom Fungi Fungi Fungi Division Ascomycota Ascomycota Ascomycota Class Eurotiomycetes Eurotiomycetes Eurotiomycetes Order Onygenales Onygenales Onygenales Family Arthrodermataceae Arthrodermataceae Arthrodermataceae Genus Microsporum Trichophyton Epidermophyton Species M. Canis T. Tonsurans E. Floccosum Electron Micrograph of M. Canis Source: http://www.superstock.com/stock- photos-images/4102-5768 Tinea Capitis Also known as “Herpes Tonsurans”, “Tinea Tonsurans” or “Scalp ringworm” Dermatophytic contagious fungal infection of the scalp, hair follicles and hair shaft Most common dermatophyte infection worldwide Caused by fungi of species genera Trichophyton and Microsporum July 12, 2011 3 BIOL 4849: Medical Mycology Most widespread in children • Highest incidence among children aged 3-7 years • Rare in adults Symptoms: • hairless patches on the scalp • gray, scaly patches • Little or no irritation 07/12/11 BIOL 4849: Medical Mycology 4 Tinea Capitis Figure: Child suffering from Tinea capitis Source: http://furiouspurpose.files.wordpress.com/2010/09/tinea- capitis.jpg Etiologic Agent and Taxonomy • Microsporum (M.) canis (most prevalent), T. tonsurans, M. namum, T. violaceum, T. concentricum, and E. floccosum. 07/12/11 BIOL 4849: Medical Mycology 5 Tinea Capitis 07/12/11 BIOL 4849: Medical Mycology M. canis Geographic Distribution • Most prevalent in Western & Southern Europe • Italy • Greece • Germany • Hungary and Poland also report high rates of M. canis tinea capitis in Europe Figure: European countries with high rates of M. canis Source:http://www.enchantedlearning.com/subjects/continents/Euro pe/label/labelanswers.GIF
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7/17/2011
1
Dermatophyte Infections
The above student authors generated this web page presentation as an assignment in Dr. Cooper’s Medical Mycology course at Youngstown
State University. Except for the indicated copyrighted material included within this electronic document, this web page is an intellectual
product of the above students and Dr. Cooper. This page may be used for educational purposes only. Any other use requires the
permission of the above authors as well as Dr. Cooper ([email protected]).
Presentation Developed By: Jenee
Thurston, Brittany Seman and Adam
Speerstra
July 17, 2011 1 BIOL 4849: Medical Mycology
Tinea Capitis
Ringworm of the scalp
Etiologic Agent and Taxonomy
• M. Canis, T. Tonsurans, M. Nanum
July 17, 2011 2 BIOL 4849: Medical Mycology
M. Canis T. Tonsurans M. Nanum
Kingdom Fungi Fungi Fungi
Division Ascomycota Ascomycota Ascomycota
Class Eurotiomycetes Eurotiomycetes Eurotiomycetes
Order Onygenales Onygenales Onygenales
Family Arthrodermataceae Arthrodermataceae Arthrodermataceae
Genus Microsporum Trichophyton Epidermophyton
Species M. Canis T. Tonsurans E. Floccosum
Electron Micrograph of M. Canis
Source:
http://www.superstock.com/stock-
photos-images/4102-5768
Tinea Capitis
Also known as “Herpes Tonsurans”, “Tinea
Tonsurans” or “Scalp ringworm”
Dermatophytic contagious fungal infection
of the scalp, hair follicles and hair shaft
Most common dermatophyte infection
worldwide
Caused by fungi of species genera
Trichophyton and Microsporum
July 12, 2011 3 BIOL 4849: Medical Mycology
Most widespread in children
• Highest incidence among children aged 3-7
years
• Rare in adults
Symptoms:
• hairless patches on the scalp
• gray, scaly patches
• Little or no irritation
07/12/11 BIOL 4849: Medical Mycology 4
Tinea Capitis
Figure: Child suffering from Tinea capitis Source: http://furiouspurpose.files.wordpress.com/2010/09/tinea-
capitis.jpg
Etiologic Agent and Taxonomy
• Microsporum (M.) canis (most prevalent), T.
tonsurans, M. namum, T. violaceum, T.
concentricum, and E. floccosum.
07/12/11 BIOL 4849: Medical Mycology 5
Tinea Capitis
07/12/11 BIOL 4849: Medical
Mycology
M. canis Geographic Distribution
• Most prevalent in Western &
Southern Europe
• Italy
• Greece
• Germany
• Hungary and Poland also
report high rates of M. canis
tinea capitis in Europe Figure: European countries with high rates of M. canis