Epidermophyton
A genus of fungi causing dermatophytosis
Epidermophyton is a genus of fungi in the family Arthrodermataceae. It is one of the dermatophyte genera that cause dermatophytosis, commonly known as ringworm or tinea. The genus is characterized by its ability to infect keratinized tissues such as skin and nails.
Description[edit | edit source]
Epidermophyton species are filamentous fungi that produce macroconidia and lack microconidia. The macroconidia are smooth-walled, clavate, and typically have two to four cells. These fungi are keratinophilic, meaning they thrive on keratin, a protein found in skin, hair, and nails.
Species[edit | edit source]
The genus Epidermophyton includes the following species:
Epidermophyton floccosum is the most clinically significant species, responsible for most human infections. It is a common cause of athlete's foot, jock itch, and onychomycosis.
Pathogenesis[edit | edit source]
Epidermophyton species are transmitted through direct contact with infected individuals or contaminated surfaces. The fungi invade the stratum corneum of the skin, leading to the characteristic ring-shaped lesions of dermatophytosis. The infection can spread to other areas of the body or to other individuals through contact.
Diagnosis[edit | edit source]
Diagnosis of Epidermophyton infections is typically made through clinical examination and confirmed by microscopy and culture. Skin scrapings from the affected area are examined under a microscope for the presence of fungal elements. Cultures on Sabouraud's dextrose agar can help identify the specific species.
Treatment[edit | edit source]
Treatment of Epidermophyton infections involves the use of antifungal medications. Topical antifungals such as clotrimazole or terbinafine are commonly used for skin infections. Oral antifungals may be necessary for more extensive infections or nail involvement.
Prevention[edit | edit source]
Preventive measures include maintaining good personal hygiene, keeping skin dry, and avoiding sharing personal items such as towels and footwear. In communal areas, such as gyms and swimming pools, wearing protective footwear can help reduce the risk of infection.
Related pages[edit | edit source]
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Contributors: Prab R. Tumpati, MD
