What can I do when I have symptoms of the dysthymia?

See below. Treatment for dysthymia includes antidepressant drug therapy, along with some type of talk therapy.
Therapy? Have you yet tried any form of psychotherapy? Typically, the optimal combination of things to treat emotional issues such as dysthymia is medication (which, on your best day, is supposed to take the edge off symptoms) but the real gruntwork takes place in psychotherapist's consulting room.
If you believe you. Have symptoms of dysthymia, then i would encourage you to be psychologically evaluated as well being medically assessed. Based on the findings a treatment plan can be developed. Depressive disorders can be treated.