Infections of Skin · NEET PG Preparation Dermatology
A 45-year-old farmer presents with a chronic, painless nodule on his right index finger that ulcerated, followed by the appearance of a chain of subc…
Practice question from Infections of Skin (NEET PG Preparation Dermatology), with the correct answer and a step-by-step solution.
hard · MCQ · Q-74A594
A 45-year-old farmer presents with a chronic, painless nodule on his right index finger that ulcerated, followed by the appearance of a chain of subcutaneous nodules tracking proximally up his arm along lymphatic channels. What is the most likely causative agent?
- A.Sporothrix schenckiiCorrect answer
- B.Mycobacterium marinum
- C.Actinomyces israelii
- D.Blastomyces dermatitidis
Solution
This is the classic presentation of nodular lymphangitic sporotrichosis ('rose gardener's disease'), caused by the dimorphic fungus Sporothrix schenckii. It typically begins as an inoculation site chancre with subsequent spread along lymphatic drainage.
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