Medication
There is a wide range of medications available to help treat the effects of depression.
Therapy & Counseling
Speaking to a therapist or joining a support group can help to build a supportive network.
Cognitive Behavioral Therapy
Similar to the above-mentioned therapy and counseling, a therapist may be able to help you with cognitive behavioral therapy (CBT). This involves changing perspective and negative thought patterns to improve internal thoughts and self-treatment.
This could ensure a healthy change in lifestyle and thus improve symptoms of both the ADHD and depression.
Diet and Exercise
Improving small lifestyle changes such as diet and exercise can make a large improvement in overall health and outlook. Healthier food and regular meals will increase energy and help improve function.
Regular exercise can help to establish routine and release endorphins to naturally stabilize mood.
Meditation
There are many different forms of meditation, finding the one that is best suited for you is a great way to bring a sense of calm and focus into your life. Even if it's only for a few minutes, with practice it could help to stabilize mood, increase energy, and improve thought patterns.
Conclusion
While ADHD and depression share similar symptoms, it's important to recognize the differences in order to move forward with treatment.