Any injury can stretch the anal canal and create a tear in the lining of the anus. Usually, it comes during passing hard stools. It can cause pain & bleeding during bowel movements. To avoid fissure problems, you must treat your constipation problem first. Use fiber foods in your daily diet. It will improve your digestion and help in passing stool. You can also take homeopathic medicine for fissure problems. Doctor Bhargava’s piltin drop gives you the best relief in this problem.