 Hi, this is Dr. Maruthesh. I'm a consultant laparoscopic bariatric surgeon and a laser proctologist at Manipal Hospital, Malaysia, and Bangalore. Today we are going to talk about conditions affecting our back passage. There are mainly four conditions. First one being hemorrhoids, commonly known as piles. Second one is anal fissure. Third one is anal fistula. And fourth one is pilonatal sinus. Coming to the first one, hemorrhoids or piles. It affects majority of the population. It is caused by an increase in abdominal pressure, mainly from constipation or excessive heavy lifting or inhuman during pregnancy. Condition can easily be avoided by passing the motion without putting pressure. Nowadays, instead of doing a open surgery, we do the laser surgery and you can be discharged on the same day. Second one being anal fissure. It is characterized by a severe pain on passing motion. It is also caused by constipation. Now it can be easily be treated with ointments in about 70% of the cases. Failing of ointment during the condition, we can look for a laser surgery. The third one being the anal fistula. It is a complicated condition which can be treated instead of a open surgery by a laser surgery with the modern day techniques. The last one being the pilonatal sinus. It is caused by the ingrowing hair inside the once natal cleft. Even that can easily be treated by a laser surgery which can be done as a day care. Thank you.