Common Fungal Diseases of Skin
You have been managing a patient with a severe case of tinea pedis with oral therapy. Two weeks into the treatment course, the patient develops thickened and opacified nails on the right hand. The left hand fingernails are affected to a lesser degree. The nails have become discolored and have significant debris under the nail. Nail scrapings from the fingernails are most likely to grow which organism? (LQ)
1). Dermatophytes that commonly infect the skin, hair, and nails include members of the genera Trichophyton, Epidermophyton, and Microsporum.
2). Tinea pedis is commonly associated with tinea manuum, unguium, or cruris (dermatophytosis of the hands, nails, or groin, respectively).
3). Scratching the foot with the hand is a common mode of spreading the infection.
4). Malassezia spp. is the pathologic agent in tinea versicolor and is thought to be pathogenic in seborrheic dermatitis.
5). Candidal onychomycosis usually occurs only in the immunocompromised host or with chronic mucocutaneous candidiasis.