psychiatric disorder in children

Depression is a common psychiatric disorder in children, adolescents, adults, and the elderly. Primary care providers, not mental health professionals, treat the majority of patients with symptoms of depression. Persons who are depressed have feelings of sadness, loneliness, irritability, worthlessness, hopelessness, agitation, and guilt that may be accompanied by an array of physical symptoms as well as substance abuse. Identifying patients with depression and substance abuse can be difficult in busy primary care settings where time is limited, but certain depression/substance abuse screening tools may help diagnose the disorder.

Discuss a screening tool that can be used in the primary care setting that can help with the identification of patients with depression and or substance abuse. What is your responsibility as a primary care provider to this patient once a disorder has been identified?

About one page in length. At least 3 references, not older than 5 years old.