An Infant’s Coin-Shaped Rash
Explore the diagnosis of a coin-shaped rash in an infant. Learn why this common pattern of eczema is often mistaken for a fungal infection like ringworm.
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The Curious Case of Green Nails
Explore the causes of green nails, a type of chromonychia. Learn about the common bacterial infection responsible and the associated risk factors.
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Pruritic Rash in Multiple Myeloma
A patient with multiple myeloma presents with intensely pruritic, thick, leathery skin. Explore the differential diagnosis for this unusual dermatologic finding.
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Dark Lines on Nails: A Drug Link?
Longitudinal melanonychia, or dark lines on the nails, can be a sign of a medication side effect. Discover the drugs commonly associated with this finding.
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Pigmented Genital Papules
Explore a case of hyperpigmented genital papules linked to HPV. Learn about the histologic overlap with SCC in situ and the key diagnostic features.
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A Curious Case of Crusted Plaques
Explore a dermatology case of sharply demarcated, erythematous plaques with limpet-like scales and crust. Learn the diagnosis for these unusual skin lesions.
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An Unwanted Visitor on Dermoscopy
A patient presents with intense itching. Dermoscopy reveals a six-legged culprit. Explore the diagnosis and management of this common ectoparasitic infestation.
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A Slow-Healing Skin Lesion
A patient presents with a painless papule that enlarges into a nodule with a central crust and ulceration. Explore this classic dermatological case.
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Wandering Skin Eruption
A patient presents with intensely itchy, snake-like raised red tracks on their skin. Explore the diagnosis and management of this parasitic skin infection.
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Acrodermatitis, Diarrhea & Hair Loss
A patient with alcohol abuse presents with alopecia, diarrhea, and a scaly rash on the extremities and perineum. What mineral deficiency causes these symptoms?
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