Dermoscopy of Yellow Concretions on Axillary Hair

Cervantes, Jessica; Johr, Robert J.; Tosti, Antonella

doi:10.1159/000477941

Cited by 4 publications

(3 citation statements)

References 6 publications

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“…In addition, yellow discoloration can affect the cutaneous appendages such as the hair and nails. The etiology of these changes can be secondary not only to endogenous causes such as systemic conditions or medications but also to exogenous sources [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18]. In addition to reviewing the etiology of exogenous xanthoderma, this paper also summarizes the causes of exogenous yellow hair and yellow nails.…”

Section: Discussionmentioning

confidence: 99%

“…Xanthotrichosis, or yellow hair, can result from yellow bacterial concretions most commonly on the axillary hair shaft and designated as trichobacteriosis, which was previously referred to as trichomycosis; it is caused by Corynebacterium species -such as Corynebacterium tenuis and Corynebacterium flavenscens -which are gram-positive diptheroids that colonize the affected hair [7]. Topical contact with numerous exogenous agents can result in yellow hair (Table 1) [2,3,[8][9][10][11][12][13].…”

Section: Discussionmentioning

confidence: 99%

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Tomato Plant-Associated Xanthoderma: Case Report and Review of Exogenous Causes of Yellow Skin

Cohen

2023

Cureus

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The skin, hair, and nails can all present with yellow discoloration secondary to exogenous etiologies. Xanthoderma, yellow discoloration of the skin, can occur not only from exogenous sources secondary to topical contact with various substances but also from endogenous causes such as diseases from the liver and kidney, or oral medications. A 64-year-old man developed asymptomatic, yellow staining of his distal left forearm, hand, and fingertips. He was not receiving antimalarials, did not have hepatic or renal dysfunction, and had not applied any sunless tanning solutions to his skin. Prior to the appearance of his xanthoderma, he had been tending to a tomato plant in his yard; the yellow staining appeared on the areas of his left upper extremity that had contacted the stems and leaves of the tomato plant. Within two days, the yellow skin discoloration resolved spontaneously after several washings of the affected areas with soap and water. Tomato plants have trichomes that appear as hair-like structures on the stems and produce an oily substance; the trichomes not only produce the scent of the plant, but also provide protection from cold, drought, disease, and pests. Initially, when the oily substance contacts the skin, the skin appears yellow; subsequently, the skin may become black. The skin that has been stained by a tomato plant is referred to as "tomato skin" (TOMASK). In addition to reviewing the etiology of exogenous xanthoderma, this paper also summarizes the causes of exogenous yellow hair and yellow nails. Exogenous yellowing of the skin can result from various topical causes. Common topical etiologies of xanthoderma include not only contact with tomato plants, but also sunless tanning solutions (that contain dihydroxyacetone) and tobacco (that not only causes yellow staining of the white hair on men's upper lip referred to as "smoker's mustache", but also yellow staining of the nail plate and fingertips used to hold the cigarette or cigar). In summary, tomato plant-associated xanthoderma is a benign exogenous etiology of yellow staining of the skin which eventually resolves after several washings of the affected sites with soap and water.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Tomato Plant-Associated Xanthoderma: Case Report and Review of Exogenous Causes of Yellow Skin

Cohen

2023

Cureus

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“…Pediculosis and Piedra are clinical differential diagnosis [ Figure 26 ]. [ 26 ] Piedra is a superficial fungal infection involving hair shaft. White Piedra is caused by Trichosporon spp and characterized by multiple white nodules along the hair shaft.…”

Section: Bacterial Infectionsmentioning

confidence: 99%

Dermatoscopy of Infections and Infestations

Chatterjee¹,

Neema

2021

Indian Dermatology Online Journal

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Dermoscopy is a non-invasive tool for the diagnosis of skin diseases. Entomodermoscopy is a branch of dermoscopy that deals with infections and infestations. The use of dermoscopy for diagnosis of infections and infestations is rapidly increasing as it can provide useful clues related to diagnosis and effectiveness of treatment. It serves as a useful adjunct to microbiological and histopathological examination. In some cases, like scabies dermoscopy can even clinch the diagnosis.

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