The scar is a sequela of trauma, burns or surgery. The abnormal scar can influence an individual’s well beingness, so the prevention as well as treatment of scar is important. The concern for scar makes a good percentage of consultations in any Plastic Surgery out-patient department. There are many methods to manage a scar, laser Therapy using Er YAG laser is one method of management of scars that is widely used in western countries. In India, Er YAG laser therapy is relatively a recent addition, hence the data available on scar management using the same is few. This study was conducted in a Tertiary care Institute in South India under the Department of plastic surgery, aim of which was to find out if there is any relation of etiopathogenesis of scars with their outcome following Er YAG Laser Therapy or in other words to find out how different types of scars responds to the Er YAG Laser therapy. There are studies which evaluated the response of laser therapy based on the time of starting the therapy and location of the scar but the data based on the etiology is few. A Total of 73 scars were included in the study with a follow up period of 6 months