Study GuideMicrobiology–Diseases of the Skin and Eyes1.Fungal and Parasitic Skin DiseasesThe skin can be infected byfungiandparasites, leading to a variety of conditions. These infectionsoften causeitching, redness, swelling, or lesions, and they spread in different ways.1.1Athlete’s Foot and Ringworm (Dermatomycoses)Athlete’s footandringwormare common fungal skin infections caused by fungi from the generaTrichophyton,Microsporum, andEpidermophyton. These fungi are calleddermatophytes, and thediseases they cause are known asdermatomycoses.•Infection spreads throughfragments of fungal hyphae•Fluid-filled skin lesionsare common•Spread easily by contact with contaminated surfaces or skinTypes•Athlete’s foot–tinea pedis•Ringworm of the body–tinea corporis•Ringworm of the groin–tinea cruris•Ringworm of the scalp–tinea capitisTreatment usually involvesantifungal ointments, and in more serious cases, the prescription druggriseofulvin.1.2SporotrichosisSporotrichosisis a fungal infection caused bySporothrix schenckii.•Enters the body throughskin wounds•Commonly associated withrose or barberry thornsandsphagnum moss•Begins as anodular massat the site of entryPreview Mode
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