Your description sounds like a severe case of irritable bowel syndrome (IBS), the medical reasons for which are neither well known nor strongly established so far. However, there are some common causes that lead to IBS, and you can actually adopt a number of simple home remedies for the same. To address your specific symptoms, if you feel that you are having the problem of improper evacuation of stools, what you need to do is sit for a while longer and make sure your entire bowel movement is complete. You must also quit using toilet paper and start washing your anus with water and your hands. This is one of the best ways to ensure that there is no residual matter left behind after you get up.
In order to ease the itching and burning, you can apply aloe vera gel to your anus. This will help to heal the area in case you have some sort of local injury and it will also help soothe the burning sensation. You can also apply some calamine lotion if you cannot control the burning sensation with aloe alone. Some commonly established reasons for IBS are lactose intolerance and consumption of citrus fruits. It would be better if you steered clear of milk and milk products for a while as well as stayed away from citrus fruits for the duration to check this problem.
answered by M W