Hi, Thanks for posting in HCM. I understand your concern. What painful and sore lump you have noticed on the external genital region appears to be infection if the skin and hair follicles called furuncle . Kindly do the following to overcome it. 1. Rinse the area with warm water and mild antiseptic solution like Savlon twice daily. 2. Apply Neomycin cream gently over the lesion after drying. 3. Take a course of antibiotic orally containing Amoxacillin with Clavulenic acid. 4. Take antiinflammatory-analgesic medication namely Ibuprofen after food. 5. Maintain good personal hygiene and wear loose fitting undergarments. 6. Abstain from sexual activities till the lesions heal completely. Hope the information provided would be helpful. All the best.