Brief Answer: Details below Detailed Answer: hi, Lesions of herpes genitalis present as small grouped fluid filled lesions that rupture to form small superficial erosions. Herpes lesions are painful. So your lesions are possibly not of herpes genitalis. Application of medicine in an erosion can cause burning or irritation in affected area If these are frictional ulcers that have got infected, then just clean the area with warm saline water and apply a topical antibiotic cream like fusidic acid or mupirocin. Also take an oral antibiotic for few days. Refrain from sexual contact till these lesions heal. If having any doubt, meet a dermatologist nearby to get these lesions clinically examined. Sexually transmitted infection can only be ruled out by clinical examination and appropriate blood investigations. Hope this helped. Take care

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