question: Hi, I have a lower back pain. Took MRI scan 6 months back(result says disk bulge) and last week I took xray in coccyx area. A plastic surgery doctor from chennai said me that it is pilonidal sinus and he suggested me to take PENTIDS 400 mg and sitz bath daily for 5 days.  Please explain me and suggest me the best way to cure it. Thanks much in advance Age: 30 weight : 76 kg Height : 5 feet 10 inchs