Interdigital Tinea Nigra

Ibraheim, Marina Kristy; McNally, Michelle A; Tschen, Jaime A.

doi:10.7759/cureus.7579

Cited by 5 publications

(2 citation statements)

References 13 publications

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“…This pathogen thrives in high temperatures, low oxygen, and humid climates. 26 Tinea nigra is rare, but corn foot is a keratotic outgrowth caused by heels and illfitting shoes. The study includes medical and paramedical students, focusing on hygienic practices.…”

Section: Discussionmentioning

confidence: 99%

Prevalence of skin diseases among hostellers attending the tertiary care hospital

Abirami P,

Narmadha S

2024

Asian J Med Sci

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Background: Skin diseases are more common but are mostly non-fatal and chronic. Dermatological conditions account for a significant proportion of the global burden of diseases. Aims and Objectives: The study aimed to determine the prevalence of skin diseases among hostellers, determine the causative factors, and describe the prevention. Materials and Methods: This cross-sectional study was conducted for 2 months in the outpatient Department of Dermatology, Government Medical College, Pudukottai, on 507 hostellers. The study subjects were examined and diagnosed by the dermatologist. Questions such as exposure to sunlight, usage of sunscreen, frequency of head baths, and junk food consumption were asked and recorded in a case study form by the principal investigator. Results: Pityriasis capitis was the most prevalent skin disease among 507 participants, followed by acne vulgaris (54.83%) and pediculosis capitis (25.64%). Pityriasis capitis is more common in men (56.17%), with higher chances in those with head baths (<3 times/week) and exposure to sunlight (28.08%). Acne vulgaris affects both males and females equally; face washing <3 times daily is associated with oil and sebum retention, while lack of sunscreen and junk food intake are linked. Periorbital melanosis is more prevalent in females (54.62%) and is linked to stress (66.39%). Sleep duration is also a factor, with 69.23% of girls having a history of cosmetic usage. Conclusion: Pityriasis capitis, acne vulgaris, pediculosis capitis, dermatophytosis, and periorbital melanosis are common skin diseases caused by sharing, sleep deprivation, stress, and poor hygiene. Proper hygiene, sleep patterns, and self-care can reduce skin disease incidence.

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Section: Discussionmentioning

confidence: 99%

Prevalence of skin diseases among hostellers attending the tertiary care hospital

Abirami P,

Narmadha S

2024

Asian J Med Sci

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“…4 Tinea nigra affects people in temperate or subtropical climates because it flourishes in high-temperature, lowoxygen, and humid settings. 5 Hyperhydrosis and being in coastal or hyper saline habitats, where the causative agent may be absorbed from the natural ecosystem, are predisposing variables linked to the disorder. 6,7 Individuals arrive with well-demarcated, expanding, hyperchromic plaques on the palms or soles having Department of Microbiology, Government Medical College, Aurangabad, Maharashtra, India uneven borders, in which the fungus may or may not live in commensalism with other organisms.…”

Section: Introductionmentioning

confidence: 99%

Incidence of Hortaea werneckii in a tertiary care centre in Maharashtra

Mehta,

Bhakre,

Kante

et al. 2024

Int J Res Med Sci

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Background: Hortaea werneckii, a melanized yeast-like fungus is the cause of Tinea nigra, a superficial dermatomycosis. The lesions are differential diagnosis of melanocytic lesions. Tinea nigra mainly affects people in the temperate or subtropical climates with well-demarcated, expanding, hyperchromic plaques on the palms or soles. Methods: Skin scrapings from various lesions with suspected fungal aetiology were received after clinical assessment and were subjected to laboratory procedures, including direct KOH (10%) analysis, culture on Sabouraud dextrose agar (SDA), and incubation at 25°C and 37°C for 28 days which was further confirmed by lactophenol cotton blue preparation and slide culture. Results: Out of 295 samples examined, a total number of 15 samples were positive for Hortaea werneckii in the time period of 1st January 2023 to 31st December 2023. 7 patients had lesions on both palmar as well as plantar region (46.66%), 3 on palmar and plantar region each (20%), 1 (6.66%) on scalp and 1 (6.66%) on face and scalp. The skin scrapings were taken and examined in 10% KOH wet mount which showed positivity of 11 (73.33%) samples. The primary isolation of the fungus was done on SDA. Conclusions: Hortaea werneckii is the most common cause of Tinea nigra. Pigmented patches of Tinea nigra may be confused with other inflammatory or neoplastic aetiology. For Tinea nigra, skin scrapings are sufficient for diagnosis by KOH mount and culture on SDA. Generally, the lesions resolve within 2 weeks of adequate treatment. To conclude, a high suspicion should be maintained to timely diagnose the disease, avoid unnecessary invasive investigation and early administration of treatment.

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