Papulosquamous & Vesiculobullous Disorders · NEET PG Preparation Dermatology
A 25-year-old medical student develops a solitary, oval, fawn-colored, scaly plaque with a collarette of scale on his back, which was preceded 10 day…
Practice question from Papulosquamous & Vesiculobullous Disorders (NEET PG Preparation Dermatology), with the correct answer and a step-by-step solution.
easy · MCQ · Q-E9821D
A 25-year-old medical student develops a solitary, oval, fawn-colored, scaly plaque with a collarette of scale on his back, which was preceded 10 days earlier by a larger similar plaque. Within a week, multiple smaller secondary lesions appear along Langer lines in a 'fir-tree' distribution. What is the diagnosis and expected course?
- A.Tinea corporis; requires systemic antifungals
- B.Pityriasis rosea; self-limiting within 4-8 weeksCorrect answer
- C.Guttate psoriasis; lifelong chronic relapsing condition
- D.Secondary syphilis; requires benzathine penicillin
Solution
The herald patch followed by secondary eruption in a 'fir-tree' distribution along Langer lines is classic for Pityriasis rosea. It is a benign, self-limiting papulosquamous eruption that typically resolves spontaneously in 4 to 8 weeks.
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