Dysthymia is a chronic form of depression.
Persistent depressive disorder, also called dysthymia, is a continuous long-term (chronic) form of depression. You may lose interest in normal daily activities and you may find it hard to be upbeat even on happy occasions.
You may also feel hopeless, lack productivity, and have low self-esteem and an overall feeling of inadequacy. These feelings last for years and may significantly interfere with your relationships, work and daily activities.
Because of the chronic nature of persistent depressive disorder, coping with depression symptoms can be challenging, but a combination of talk therapy (psychotherapy) and medication can be effective in treating this condition.
Conditions that may be linked with persistent depressive disorder include:
- Reduced quality of life
- Major depression, anxiety disorders and other mood disorders
- Relationship difficulties and family conflicts
- School and work problems and decreased productivity
- Chronic pain
- General medical illnesses
Source:
https://www.mayoclinic.org/diseases-conditions/persistent-depressive-
disorder/symptoms-causes/syc-20350929