The dermatophytosis (or dermatophytie or dermatomycosis) are infections of the skin or eyes caused by filamentous fungi: dermatophytes. They belong to 3 kinds, Trichophyton, Microsporum and Epidermophyton.
These fungi are kératinophiles, they have a predilection for the keratin in the stratum corneum of the skin, hair, hair and nails in humans, skin, hair and nails animals.
They are responsible for superficial skin infections of the skin and eyes but respect the mucous membranes.
The dermatophytes are always pathogens, absent from commensal flora permanent or transient skin.
The natural resistance of the zebu Gudali dermatophytosis in relation to other cattle in the same region has not yet been the subject of research.
These are injuries to reach the hair.
* Teignes tondantes dry
Cause alopecia plates on the scalp. The hair bulb is not reached and hair are broken short a few mm. They reach especially children. Healing is spontaneous after puberty. There are two kinds:
-- Moths tondantes dry microsporiques. The most prevalent is due to M. Canis. There is a kind of Far East due to M. Ferrugineum. The plates are small (1 to 4) and large sizes (4 to 7 cm).
-- Moths tondantes dry trichophytiques highly contagious. The plates are much more numerous and small (5mm). The hair is shorter broken.
* Teignes faviques
Due to T. Schoenleini, anthropophilic, in children and adults, cosmopolitan but increasingly rare in France. Ringworm (or favus), begins with a task-érythémato scaly and evolves after months towards crouteuses plates and a pot of a few mm favique, centered by a hair. The merging of several cups realizes favique crust. When the hair falls, they form a plate alopecia final. The favus does not heal without treatment. It affects the scalp, but sometimes face and other parts of the body, with injuries "bucket".
* Teignes suppurées
Or kérions of Celsus. Rencontrées in adults and children, due to dermatophytes anthropo-zoophiles: T. And T. mentagrophytes Verrucosum. The kérions reach the scalp and pileuses areas (including the beard or moustache). The hair or hair fall but regrow.
They are suffering from skin hairless.
* Herpes circine
The most frequent epidermophyties, adult and child: erythemato-scaly patch stretching from eccentric way, the central area becoming clearer and scarring, the periphery being red, scaly or gallbladder. Single or multiple. There are clinical forms misleading. Herpes circiné has nothing to do with the herpes virus (herpes simplex virus).
* The jock itch
It is a violation of inguinal fold, looking like a herpes circiné, spreading rapidly, sometimes dramatically, very itchy.
* Intertrigo interdigito-plantar
The foot fungal infections are one of the most common infections of the feet.
This is an injury that starts with a violation of the free edge of the finger, with a yellowish stain, slow expansion.
Are demonstrations allergic distance from home infectious. The appearance is that of a dyshidrose, but can also look like a herpes circine, although that can not be found any Dermatophyte at this location (also called mycétide lesion).
Diagnosis and treatment
The diagnosis is made after collection (s), microscopic examination and cultures. Treatment is usually based griseofulvin.
Read also Dermatophytosis