You may be suffering from Anal fissure. You should avoid constipation for that take plenty of fluids. Increase fiber intake in meals. Take sitz bath in warm water twice daily. You may take some laxative if stool is hard.

First of all try to avoid Spicy, oily food , take plenty of liquids,fiber foods like green vegs soup etc, will treat constipation soon and then if need to take medicine , consult proctologist near by your resident , because many causes will be there for painful deification , take sitz bath after passinf stool, Anobliss ointment will help you to ressolve the prob . it can be applied on locat effected part , syrup cremaffin plus or Isapgol 2 tea spoon full with water will beneficial to you . these all medication should be taken under observation of consultant so dont try self medication for it at home !

Hello there.  I can understand your concern.  In such a condition you should avoid eating whatever causes problems to you. Drink plenty of water, avoid oily and spicy foods. Avoid tea/coffee and other carbonated beverages.  Tab. Pan 40 once a day half an hour before food for 10 days. Syp. Duphalac 15ml before bed daily for 7 days. Have a gigh fiber diet. Best regards. Dr. Anil kumar jain. Bangalore.