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I have seen your images (attachment removed to protect patient identity), looks like perianal area is swollen secondary to explained injury. It will take a little time to heal completely. Kindly follow the following instructions:
1. Lignocaine gel for local application over perianal area before and after defecation.
2. Continue sitz bath for 4 to 6 minutes a day.
3. Tablet Combiflam 400 mg BID for three days.
4. Drink plenty of water.
5. Keep hygiene over perianal area.