Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. The nasal septum can depart from the centre line of the nose in a condition is known as a deviated septum due to trauma. However, it is normal to have a slight deviation to one side. The septum generally stays in the midline until about the age of 7, at which point it will frequently deviate to the right. A perforated nasal septum can be caused by an ulcer, trauma due to an inserted object, excessive nose-picking, long-term exposure to welding fumes, or cocaine abuse. There is a procedure that can be of help to those suffering from perforated septum. A silicone button can be inserted in the hole to close the open sore. An operation to the nasal septum is known as a septoplasty.