Depression is a common but serious mood disorder. In medical terminology, it can be defined as a major depressive disorder or clinical depression. 10 out of 9 people in the world are suffering from depression. It exists within but very difficult to diagnose. On other words, depression is a serious mental disorder that slowly and slowly makes a person confined and isolated from the outer world.A frequent mood swing also indicates an onset of depression. Severe depression makes a person highly gloomy, negative and no interest in life. Being a victim of depression is like fighting with our own self, your mind goes out towards the darkness and this could be life threatening also. Depression can be caused due to over ambition, failure in the love life, failure in examination, relationship trouble, bad marriages and financial constraints. If there is a continuous change in the behavior of a person, then it shows that he or she is suffering from some depressive symptoms.The signs that are mostly seen are remaining isolated, unsocial, and unable to concentrate and not going out anymore. Depression is sum of two words “deep” and “pressure”. It means when a person go through deep pressure due to some specific reason like married life, job, property, children etc that create negative thinking and those negative thoughts convert in depression.