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A boil is an infection, usually of hair follicles, that appears as a bubble-shaped protrusion. It is filled with pus. Boil on anus is extremely painful.
I advice you to apply lignocaine jelly in painful region to decrease your pain intensity.
Tab.Hifenac-P twice a day for 5 days
400mg once a day for 5 days
Sit in warm water for 15 mins as it reduces pain spontaneously.
I Hope I Provided Useful Information. Do ask Furthur Questions to help You get well soon.
Dr.J.Kingson John David