SKIN ULCER BY LOCATION: Genitals Skin Ulcer Oral Head/Neck Trunk/Sacral Region Genitals Lower Legs/Feet Painless Painful Herpes simplex Haemophilus ducreyi (chancroid) Behçet's syndrome Pemphigus vulgaris Lichen sclerosis Erosive lichen planus Primary syphilis (chancre) Granuloma inguinale Lymphogranuloma venereum

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