Dysthymia is a chronic form of depression that lasts for at least two years (one year for children), but often lasts for many years. Although the symptoms that are associated with this type of depression are fewer and less severe than those that are associated with major depression, they can still seriously reduce the quality of life for anyone who suffers from it. In some cases it will lead to end of life also. Over the long term, these symptoms can negatively impact normal functioning as much as major depression
Chitra P. and Jidhun, P., “A Case Report on Childhood Dysthymia-Low Mood Triggers The End”, International Journal of Nursing Education, vol. 8, no. 2, pp. 219-222, 2016.