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CASE #1 Pemphigus vulgaris A 60-year-old man with a history of Hashimoto thyroiditis and rheumatoid arthritis presents with a 3-month history of painful blisters and erosions, which initially presented in [...]

A healthy 16-year-old girl presents with six tan patches on her trunk and upper arms, freckles in her axillae, and a reddish discoloration under the tip of her thumbnail. The [...]

A 30-year-old healthy Hispanic woman presents with a slowly progressive facial deformity present since early childhood. She denies any new lesions during this time, any history of trauma to the [...]

A healthy 45-year-old woman presents with a several-month history of a small papule at the corner of her right eye. The lesion is asymptomatic and is not enlarging, but she [...]

A 60-year-old man presents with rapidly growing lesions on his face, trunk, axillae, flexural areas, and groin. The lesions appeared 3 months earlier in his perianal area and extended rapidly [...]

A 50-year-old woman presents with a 5-day history of progressive, painful rash on her face, trunk, extremities, nasal tip, and ears, as well as fever and arthralgia. She has a [...]

A 7-month-old male who had been born prematurely presents with a 2-month history of diarrhea, failure to thrive, alopecia, and rash involving the perioral, perianal, and acral areas. He had [...]

A healthy 30-year-old man presents with a 3-year history of an asymptomatic, fleshy papule at the base of his great toe. He denies any new lesions during this time, a [...]