Clinical depression is still assessed by a comprehensive clinical assessment by a professional, which includes a symptomatological assessment to determine the presence of depressive symptoms based on the patient’s recent clinical presentation, such as the presence of depressed mood, diminished interest, and decreased energy. Psychological scales are also used to further verify the presence of such depressive symptoms and the severity of the depressive symptoms. After assessing the presence and severity of depression, medication or psychotherapy can be chosen depending on the clinical presentation and severity of the depression.