Had LIS in August 2018. Surgeon said fissure healed at 3 weeks. Retore at 4 weeks, back to the doctor who confirmed and prescribed nifedipine and seemed kinda shocked that it was back.
6 months later fissure still bleeds during bowel movement 1-2 times a week.
Zero constipation or straining. No idea why my anus refuses to heal fissures even post LIS.