Sharp rectal pain is usually caused by anal fissures or piles/hemorrhoids. An anal fissure is a small tear in the mucous lining the lower rectum (anus). Hemorrhoids are enlarged blood vessels around the anus. The actual cause of hemorrhoids is not completely known. Constipation, pregnancy, child birth, obesity, poor fiber in diet, poor bath room habits, postponing bowel movements, straining whilst lifting or vomiting contribute to development of anal fissures and hemorrhoids. Anal fissures often heal and do not need treatment. Hemorrhoids tend to get worse over time, and it should be treated as soon as it is diagnosed. Several surgical and non-surgical techniques are used to treat hemorrhoids. Also check for blood in stool. There are some preventive measures which I can tell you over here. 1. Apply locally Shield ointment or Anovate cream 4 times daily 2. Take high fiber diet such as split peas, lentils, black beans, lima beans, baked beans, whole grains, vegetables such as artichoke, green peas, and sprouts and fruits 3. Syrup lactulose (Syrup Duphalac) 2 teaspoonful per oral at bed time if you have constipation 4. Drink 4 – 5 liters of water daily 5. Avoid weight lifting 6. Avoid straining while defecating 7. Avoid coughing 8. Consult a general surgeon for per rectal examination and diagnosis and further management 9. Investigation – Hb% Thanks