Not Just Genital Warts

Condylomata lata
A 17-year-old presents with a 1-month history of pruritic, smooth, grayish-white papules on the vulva. Learn the key differential for genital lesions.
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A Puzzling Chin Lesion

Odontogenic cutaneous fistula
A 42-year-old woman presents with a painful chin swelling. With no recent trauma or fever, what could be the surprising underlying cause of this facial lesion?
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Puzzling Ulcers in a Young Boy

Pyoderma gangrenosum
A 5-year-old boy develops painful skin ulcers unresponsive to antibiotics. Explore a case of a rare inflammatory skin condition without revealing the diagnosis.
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Pruritus and Pustules in Pregnancy

Atopic eruption of pregnancy
A 37-year-old woman at 30 weeks' gestation has a widespread, pruritic rash. Review the workup and diagnosis of common dermatoses in pregnancy.
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Velvety Plaques & Hidden Dangers

Malignant acanthosis nigricans
A 30-year-old presents with skin lesions. Learn how velvety plaques can be a critical paraneoplastic sign of an underlying malignancy, like gastric cancer.
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A Winding Rash After IV Therapy

Serpentine supravenous hyperpigmentation
A 58-year-old woman with cancer develops a linear, hyperpigmented rash along the veins of her arms after IV therapy. What's the diagnosis?
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What’s This Bleeding Lip Bump?

Pyogenic granuloma
A 45-year-old woman presents with a painless, rapidly growing, friable lesion on her upper lip. Explore the differential diagnosis for this presentation.
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ICU Patient’s Sudden Vesicular Rash

Miliaria crystallina
A 55-year-old ICU patient develops a sudden vesicular rash on his trunk and arms post-surgery. Explore the differential diagnosis for this common skin finding.
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A Glowing Clue to a Groin Rash

Corynebacterium minutissimum
A 38-year-old man has a groin rash that failed antifungal treatment. Discover how a Wood's lamp examination revealed the true bacterial cause.
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A Proliferative Penile Puzzle

Herpes vegetans
A 39-year-old man with HIV presents with a 1-year history of recurrent, painful penile ulcers. Biopsy reveals unusual features. What's the diagnosis?
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