Hello, Apply Ano rectal cream or Anusum cream on the area affected to get relieve from burning sensation in the rectum. You can also take sitz bath twice or thrice daily to get relief. Burning sensation is indicative that you may have fissures. Get clinically examined locally before the symptoms worsen. To reduce the symptoms of IBS, frequent bowel movements, gas you will have to make dietary changes, lifestyle adjustments, along with the medical treatments being given. Avoid taking food that trigger your symptoms. Avoid fatty foods, caffeine, spicy foods, and artificial sweeteners. To help regulate bowel movement, include high soluble fiber in your daily diet like oats, bananas, and psyllium husk. Drink water and prevent dehydration to help with digestion. Avoid constipation as it triggers gas formation. Manage stress, do moderate exercises, avoid sedentary life, do regular walking, become active. Take probiotics it will improve gut health. Apply petroleum jelly before bowel movement. Try to take meals at the same time every day and maintain consistent sleep patterns. Work out your diet chart with a registered Nutritionist. Take care. Hope I have answered your question. Let me know if I can assist you further. Regards, Dr. Nupur K, General & Family Physician