The main aim and objective of the study is to revalidate Acharya Sushrutas Chandrachakra incision followed by kshara karma in Parisravi Bhagandara. Sample source - subjects fulfilling diagnostic criteria. Diagnosis by confirming following signs and symptoms of Parisravi Bhagandara after thorough digital, rectal, proctoscopic examination of subjects, like presence of external opening near anal canal, pain, itching, discharge.

Intervention - Pre operative procedure like physical fitness will be taken, inform and written consent will be taken, nil by mouth for 6 hours prior to surgery, part preparation followed by proctoglycerin enema will be given, injection TT intramuscular and injection lignocaine test dose subcutaneous will be given.

Operative procedure - under all aseptic precautions spinal anaesthesia will be given, part will be painted with povidone iodine solution and draped in the lithotomy position. External opening of fistulous tract will be identified and probed. Chandrachakra incision will be taken over external opening, excision of tract followed by kshara karma will be done. Complete hemostasis will be achieved. Anal packing will be done.

Post operative procedure - Subject will be shifted to post operative ward, catheterization will be done. Foot end elevation, restricted head movements will be advised. The vitals will be monitored every 2nd hourly. Liquid diet will be started orally after appreciable bowel sounds heard .

The following subjective and objective parameters will be assessed before and after surgery. Subjective parameters are pain, itching, discharge. Objective parameters are size of wound, induration, granulation tissue. These parameters will be assessed on 1st, 7th, 14th, 21st, 28th. On completion of treatment the subjects will be asked to visit the opd after 15 days. Paired t test, wilcoxon signed rank test will be made use of for statistical analysis.