The term depression is used to describe a long period of sadness. If such sad feelings stay on for more than 2 weeks it is diagnosed as Depression. It is important to understand, that there are broadly 2 types of depression- Biological depression & Reactive depression. As the name suggests, Reactive depression refers to the sadness that is experienced in response to various causative factors like the death of a near one, financial insecurities, a broken love affair and others. Alternatively, Biological depression may have no evident cause for those depressive feelings, except for the neurochemical imbalances. Medicines have a more significant role to play in biological depression, while counselling helps immensely in the reactive depression types. It’s important to remember that major depressive disorder is an illness and needs to be treated just like other ailments.