White piedra (trichosporosis)

Smith, J. D.

doi:10.1001/archderm.107.3.439

Cited by 7 publications

(9 citation statements)

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“…In tropical climates it more commonly affects the scalp, while in temperate climates, the moustache, beard, and pubic hair are more commonly infected (Taplin & Rebell, 1979a). As with our patient, there have been numerous previous reports of infection confined to the scrotum (Patterson, Laine & Taylor, 1962;Londero, Ramos & Fischman, 1966;Kotovirta, Stubb & Salonen, 1975;Smith et al, 1973;Fischman, Pires De Camargo & Meireles, 1980;Benson et al, 1983). Our patient was also noted to have a Trichophyton rubrum infection of his left hand and both feet.…”

Section: Discussionsupporting

confidence: 78%

“…Our patient was also noted to have a Trichophyton rubrum infection of his left hand and both feet. There have been previous reports of a coexistent infection with Trichophyton mentagrophytes and T. beigelii on the inguinal skin and of a Trichophyton rubrum infection of the toe webs associated with a T. beigelii infection of the scrotum (Smith et al, 1973).…”

Section: Discussionmentioning

confidence: 97%

“…Both are fungal infections confined to the hair shaft, sparing adjacent skin. The term 'piedra', a Spanish word meaning 'stone', was initially used to describe the hard nodules of black piedra (as opposed to the softer nodules of white piedra) which may generate a sound similar to pebbles rattling in a bean bag when struck by the teeth of a comb (Smith et al, 1973). Some authors prefer the name 'trichosporosis' for the hair infection caused by T. beigelii to clearly distinguish it from black piedra (Taplin & Rebell, 1979a).…”

Section: Discussionmentioning

confidence: 99%

“…The nodules of white piedra vary in colour from white to brown-black or green, are visible to the naked eye, do not fiuorescence under Wood's light, and feel gritty on palpation. They are soft and spongy, are easily removed from the hair (Benson et al, 1983), and may vary in size from microscopic to 05 nun in diameter and up to 3 mm in length (Smith et al, 1973) (Fig. 2).…”

Section: Discussionmentioning

confidence: 99%

“…Since first described in England, white piedra has been reported in Western and Central Europe, the United States, South America, and the Orient (Smith et al, 1973). White piedra may involve the hairs ofthe scalp, mustache, beard, eyelashes, eyebrows, axilla, or groin (Scott, 1951;Smith et al, 1973;Taplin & Rebell, 1979a). In tropical climates it more commonly affects the scalp, while in temperate climates, the moustache, beard, and pubic hair are more commonly infected (Taplin & Rebell, 1979a).…”

Section: Discussionmentioning

confidence: 99%

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White piedra-a case report and review of the literature

Steinman

Pappenfort

1984

Clin Exp Dermatol

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Summary White piedra (trichosporosis) is an unusual fungal infection of hair characterised by the presence of numerous, discrete, soft, asymptomatic nodules attached to the infected hair shafts. It may occur on the scalp, eyebrows, eyelashes, beard, axilla, or in the groin (Smith, Murtishaw & McBride, 1973; Taplin & Rebell, 1979a), although most infections occur on the face or scalp (Smith et al., 1973). Caused by the yeast‐like fungus Trichosporon beigelii, white piedra was first described in London (Beigel, 1865), and has since been reported in Europe, North and South America, and Asia (Scott, 1951; Benson, Lapins & Odom, 1983). Successful treatment of white piedra has been achieved with simple hair clipping and with the use of various topical medications. To our knowledge, there have been no reports of successful treatment with the use of topically applied imidazole preparations. We report a case of white piedra confined to the scrotum that responded to topical clotrimazole lotion.

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Section: Discussionsupporting

confidence: 78%

Section: Discussionmentioning

confidence: 97%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

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White piedra-a case report and review of the literature

Steinman

Pappenfort

1984

Clin Exp Dermatol

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White piedra andTrichosporon beigeliicarriage in homosexual men

Stenderup¹,

Schønheyder

Ebbesen³

et al. 1986

Med Mycol

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Trichosporon beigelii was isolated from the anal region in 45 (13%) of 343 Danish homosexual men. T. beigelii was also present on the scrotal skin of six anal carriers who were accessible for re-examination, and white piedra of the genital hair was observed in two cases. Because T. beigelii may cause systemic infections in compromised hosts it may pose a threat to homosexuals infected by HTLVIII/LAV virus.

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White piedra: evidence for a synergistic infection

et al. 1990

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To determine the relative roles of coryneform bacteria and Trichosporon beigelii in the pathogenesis of genital white piedra, scrotal hair from 10 subjects was studied. Hairs were examined by light microscopy to determine the relative proportions of each organism, and were also cultured for coryneforms and yeast. Histologically, hair nodules from five out of nine cases showed a mixture of yeasts and bacteria, four had bacteria alone, and none showed yeast alone. Five strains of T. beigelii were cultured, two strains of Saccharomyces cerevisiae and 22 strains of coryneforms. The isolates were tested for synergism by a plate-overlay method. Growth of coryneforms occurred over and around sections of the plate inoculated with T. beigelii but not around the control yeast, S. cerevisiae. There were strain differences in the stimulatory response of both T. beigelii and coryneform strains. In reverse experiments coryneforms did not enhance growth of T. beigelii. It was concluded that white piedra is a mixed infection caused by the synergistic action between T. beigelii and a specific coryneform bacteria resulting in invasion of the hair cuticle and cortex.

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White piedra (trichosporosis)

Cited by 7 publications

References 0 publications

White piedra-a case report and review of the literature

White piedra-a case report and review of the literature

White piedra andTrichosporon beigeliicarriage in homosexual men

White piedra: evidence for a synergistic infection

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