Overview
What is pediatric tinea versicolor?
When was pediatric tinea versicolor first identified?
What is the causative agent of pediatric tinea versicolor?
What are the risk factors for pediatric tinea versicolor?
What are the clinical variants of pediatric tinea versicolor?
What is the pathophysiology of pediatric tinea versicolor?
What causes pediatric tinea versicolor?
What is the prevalence of pediatric tinea versicolor in the US?
What is the global prevalence of pediatric tinea versicolor?
What are the racial predilections of pediatric tinea versicolor?
What are the sexual predilections of pediatric tinea versicolor?
Which age groups have the highest prevalence of pediatric tinea versicolor?
What is the prognosis of pediatric tinea versicolor?
What is included in patient education about pediatric tinea versicolor?
Presentation
Which clinical history findings are used to guide therapy for pediatric tinea versicolor?
How are pediatric tinea versicolor lesions characterized?
What is the distribution of lesions in pediatric tinea versicolor?
What are the possible complications of pediatric tinea versicolor?
DDX
Which conditions are included in the differential diagnoses of pediatric tinea versicolor?
What are the differential diagnoses for Pediatric Tinea Versicolor?
Workup
What is the role of lab testing in the workup of pediatric tinea versicolor?
What is the role of microscopy in the diagnosis of pediatric tinea versicolor?
What is the role of cultures in the diagnosis of pediatric tinea versicolor?
What is the role of imaging studies in the workup of pediatric tinea versicolor?
What is the role of a Wood lamp exam in the diagnosis of pediatric tinea versicolor?
Which histologic findings are characteristic of pediatric tinea versicolor?
Treatment
How is pediatric tinea versicolor treated?
What is the role of surgery in the treatment of pediatric tinea versicolor?
Which dietary modifications are used in the treatment of pediatric tinea versicolor?
Which activity modifications are used in the treatment of pediatric tinea versicolor?
How is pediatric tinea versicolor prevented?
What is included in the long-term monitoring of pediatric tinea versicolor?
Medications
Which medications are indicated in the treatment of pediatric tinea versicolor?
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In patients with lighter skin color, lesions frequently are a light tan or salmon color.
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Upon potassium hydroxide (KOH) examination, hyphae are visible and grow into strands within clumps of keratinocytes. Thick-walled spores frequently occur in grapelike clumps. Individual spores and short stubby hyphae float in the clear areas between clumps of keratinocytes. Many of the short hyphae are dystrophic.
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Scale is frequently difficult to appreciate upon clinical examination.
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This individual developed skin discoloration and mild itching every summer for the past few years. These patients should be instructed on the prophylactic use of topical therapy.
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This superficial plaque of tinea versicolor is located in the right antecubital fossa of an adult. This appearance and distribution is uncommon but not rare. A potassium hydroxide (KOH) preparation confirmed the diagnosis.
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Although tinea versicolor is uncommon in children in temperate climates, when it does occur, it is more likely to be atypical in distribution. This 7-year-old boy had areas of tinea versicolor across the forehead and both temples. He was in good health and lived in Washington state when he was diagnosed.
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In some patients, the areas affected by tinea versicolor are not always obvious. In this patient, the abnormal areas are hypopigmented.
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Clear adhesive tape can be pressed onto areas of tinea versicolor to collect hyphae and spores. The tape is then lightly pressed onto a glass slide, and a drop of methylene blue is placed at the edge of the tape. The methylene blue is allowed to run under the tape staining Malassezia furfur. The spores and hyphae easily are seen against a background clutter of keratinocytes and glue.
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Some patients present with extensive tinea versicolor. This patient related that his discoloration had been present for more than 20 years. The light-colored areas on the abdomen are the normal areas of skin. Although topical therapy alone is usually effective, this patient may benefit from initial therapy with oral ketoconazole, followed by selenium sulfide applications in the shower 2-3 times a month.
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Significant hyperpigmentation caused by a tinea versicolor infection.
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Confluent and reticulated Gougerot and Carteaud papillomatosis.
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Mycelium strands and numerous spores observed on a potassium hydroxide (KOH) preparation of tinea versicolor. This combination is commonly referred to as "spaghetti and meatballs."