Dr. Hanif warmly welcomes you with thanks for a consult! I have carefully worked through your case, and can well realize your health worries. Being your physician, I want to assure, I will take care all of your medical concerns according to the latest medical guidelines. Possibilities:- Pimple looking lesion in this area may be Pilonidal sinus that has got infected now and causing the issues. If this is the case, you need to consult a General Surgeon in your area to rule out. He may guide and treat you best for it as this is common disease and treatable. In this disease hairs ingrow into the skin making a track hole in the area of increased humidity and excessive hair i.e. the same area where you have the issue. Other option may be simply the hair follicle infection that is Curable through hot fomentation; Ibuprofen and a prescription drug i.e. an antibiotic Augmentin. You need to take a prescription for the same. Sitz bath will also help you in both the cases. Hope I answered all of your questions. Please click on I Find This Answer Helpful and don t forget to add your precious positive feedback to help me able to assist you better in future too. For any disease you have, a timely follow-up regarding the treatment efficacy and to see if there is any need to change the treatment options is very necessary. So keep a follow up to see how you doing. Remember to write down my name in the start of your question next time, & I will be with you right away. I am available 24/7 for providing you expert medical opinion on any health issue. Have a blessed time ahead. Regards! DR. MUHAMMAD HANIF USA FOR DIRECT QUESTIONS: http://doctor.healthcaremagic.com/Funnel?page=askDoctorDirectly&docId=70199