A 36-year-old male, heterosexual, complained of a 4-week

A 36-year-old male, heterosexual, complained of a 4-week history of ulceration in the tongue left margin. He denied previous treatment and any systemic diseases. The patient reported multiple sexual partners and episodes of unprotected sex in the past 12 months. Oral findings showed irregular erythematous patches on the dorsum of the tongue and erosive plaques on the tongue left margin with snail track pattern. What is your diagnosis?

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  1. Syphilis
  2. Geographic tongue
  3. Hairy leucoplakia
  4. Lichen planus