It is important to have a complete physical to rule out any physical illnesses that might be causing the depression. The question is whether the medical condition is physically causing the depression, rather than creating chronic psychological distress that is causing the depression. Some individuals with dysthymic disorder respond well to anti-depressant medication, in addition to psychotherapy, so an evaluation for medication may be appropriate. You should consult your psychologist if you have questions about treatment. Identifying Dysthymic Disorder Depression causes changes in thinking, feeling, behavior, and physical well-being.
Some people report problems with short term memory, forgetting things all the time.
Negative thoughts and thinking are characteristic of depression. Some people have self-destructive thoughts during more serious depression. Many people report feeling sad for no reason. Others report that they no longer enjoy activities that they once found pleasureable. You might lack motivation, becoming more apathetic.