Subacute or chronic fungal infection due to Sporothrix schenckii
Typically presents as pustules or papules that progress to form a subcutaneous nodules with ulceration and purulent dr...
Typical exposure: traumatic inoculation of fungus into the skin leading to a nodular lesion that ulcerates and leads to ascending lymphangitis
Zoonotic transmission (animal to human) f...
Local heat helps cutaneous/lymphocutaneous lesions. Apply 42–43°C daily for weeks; 72% cure rate (2)[B]
Keep cutaneous lesions clean.
Repeated drainage of infected joints
Ensure compliance with long-term therapy (continue potassium iodide 1 to 2 months after lesions heal).
Monitor hepatic enzymes periodically in pa...
Arenas R, Sánchez-Cardenas CD, Ramirez-Hobak L, et al. Sporotrichosis: from KOH to molecular biology. J Fungi (Basel). 2018;4(2):E62. [View Abstr...
B42.9 Sporotrichosis, unspecified
B42.1 Lymphocutaneous sporotrichosis
B42.7 Disseminated sporotrichosis
B42.89 Other forms of sporotrichosis
B42.82 Sporotrichosis arthritis
B42.0 Pulmonary spor...
Consider cutaneous/lymphocutaneous sporotrichosis in individuals with a history of contact with soil who present with characteristic cutaneous lesions.
Disseminated sporotrichosis may d...
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Sporotrichosis. The leg shows typical lymphocutaneous spread.
Tinea Capitis Scaling, crusting, and hair loss are seen in the scalp, along with a painful plaque (kerion) and occipital lymph node (arrow).
Tinea Capitis Scaling, crusting, and hair loss are seen in the scalp, along with a painful plaque (kerion) and occipital lymph node (arro...
tinea manuum
FIG. 6.20. Tinea capitis. Tinea capitis may cause a variety of lesions (A, B), of which a kerion (C-E) is the most dramatic. As pictured here, kerions are elevated, boggy, exudative, and frequently covered by matted hair.
FIG. 6.20. Tinea capitis. Tinea capitis may cause a variety of lesions (A, B), of which a kerion (C-E) is the most dramatic. As pictured h...
FIG. 6.21. A, B: Tinea versicolor. Tinea versicolor occurs most often in the summer, as tanning of the skin accentuates the hypopigmented lesions that are characteristic of this condition. As in this adolescent, the eruption typically involves the trunk.
FIG. 6.21. A, B: Tinea versicolor. Tinea versicolor occurs most often in the summer, as tanning of the skin accentuates the hypopigmented ...
Figure 272.2. The chain of ulcerating nodular skin lesions is typical of the lymphocutaneous form of sporotrichosis. Characteristically, the older distal lesions show more ulceration and the younger proximal lesions have not yet broken down. The "bridges" of normal skin between lesions occur frequently, but a firm swollen lymphatic "cord" connecting the nodules can be felt under the skin.
Figure 272.2. The chain of ulcerating nodular skin lesions is typical of the lymphocutaneous form of sporotrichosis. Characteristically, t...
FIGURE 2.26 Tinea corporis (ringworm). Note the annular appearance, central clearing, and "active" scaly border that demonstrate hyphae on potassium hydroxide examination.
FIGURE 2.26 Tinea corporis (ringworm). Note the annular appearance, central clearing, and "active" scaly border that demonstrate hyphae on ...
FIGURE 3.9 Tinea corporis. The lesion is annular (clear in the center).
FIG. 6.19. Tinea corporis. A, B: Tinea is one of several conditions (granuloma annulare, nummular eczema) that produces circular lesions. In tinea, the margin of the lesion contains microvesicles, which are best visualized by peering through the lens of a lighted otoscope, and is raised. C: The flat central area often shows fine scaling.
FIG. 6.19. Tinea corporis. A, B: Tinea is one of several conditions (granuloma annulare, nummular eczema) that produces circular lesions. I...
<bold>FIGURE 54-5</bold> <bold>Life cycle of intestinal tapeworms <i>Taenia solium</i> (pork tapeworm) and <i>Taenia saginata</i> (beef tapeworm).</bold> Humans acquire intestinal tapeworm infections by ingesting the tissue stage of the parasite (cysticercus) in inadequately cooked meat (1). The parasite then hatches in the intestine (2) and matures to an intestinal tapeworm (3). The pork tapeworm (outside diagram) has a crown of spines on its head and ...
<bold>FIGURE 54-5</bold> <bold>Life cycle of intestinal tapeworms <i>Taenia solium</i> (pork tapeworm) and ...
Figure 288.3. Gravid proglottid segments from <italic>T. saginata</bold> (<bold>A</bold>) and <italic>T. solium</bold> (<bold>B</bold>). Cleared in glycerol and mounted on a slide. <italic>Ub</bold>, Uterine branches. (<bold>A</bold> and <bold>B</bold> courtesy of Sylvia Paz Diaz Camacho.) <bold>C:</bold> Scanning electron micrograph of <italic>T. solium</bold> proglottid, showing genital atrium <italic>(a)</bold> and eggs <italic>(e)</bold> on surface (<italic>arrows</bold>).
Figure 288.3. Gravid proglottid segments from <italic>T. saginata</bold> (<bold>A</bold>) and <italic>T. soli...
Methenamine silver stain showing spherical, oval, and cigar-shaped yeastlike cells in a background of necrotic material. One elongate "teardrop" or "pipestem" bud is present (arrow).
Methenamine silver stain showing spherical, oval, and cigar-shaped yeastlike cells in a background of necrotic material. One elongate "tear...
Tinea capitis - erroneously treated with topical antifungal without improvement
Tinea capitis - a scaling dermatitis with patchy alopecia in a young African American girl
Tinea corporis erroneously treated with steroid. Absent scale. One appearance of 'tinea incognito', more often papular.
Tinea corporis - itching, expanding lesion present for 2 weeks since trip to Virgin Islands
Large area of tinea corporis on the buttock. Active edges, slight central clearing.
Tinea corporis. Note scale and central clearing.
Tinea corporis -matching lesions on abdomen and arm of child. Note fine scale.
Tinea manuum - present for months on only one hand
tinea capitis infection in a child; possible staph suprainfection