Hemorrhoid surgery 20 days after feeling a tearing pain at the wound is what causes it

Hello, according to your description of the situation, hemorrhoid surgery 20 days after treatment, due to the location of the surgical incision is more special, so it is not conducive to the healing and recovery of the incision, if the incision is not obvious redness, swelling and infection, there is no big problem, usually wash the anus with potassium permanganate solution can be, if the pain is more serious, it is recommended that timely go to the hospital anorectal clinic to look at the specific, and then according to the results of the examination