What Causes Skin Mycoses?

What Causes Skin Mycoses? Most cutaneous mycoses are caused by dermatophytes, a group of filamentous fungi that colonize and infect keratinized tissues, including the outermost layer of skin (i.e., stratum corneum), hair, and nails. What is mycosis of the skin? A fungal infection, also called mycosis, is a skin disease caused by a fungus. There