Major Depressive Disorder (MDD) is a clinically significant mental health condition characterised by persistent low mood, loss of interest or pleasure in activities, and a range of cognitive, physical, and emotional symptoms that meaningfully impair daily functioning. While it is often perceived as an adult condition, depression can and does occur in children and adolescents, and is more prevalent in young people than is commonly recognised. Research indicates that approximately one in sixteen Australian adolescents experiences depression at any given time, with rates increasing significantly during the teenage years.
Depression in young people is distinct from ordinary sadness or the typical emotional fluctuations of childhood and adolescence. To meet the diagnostic threshold for Major Depressive Disorder, symptoms must be present for a minimum of two weeks, represent a change from previous functioning, and cause clinically significant distress or impairment across key areas of a young person's life. It is also common for MDD to co-occur with anxiety disorders, ADHD, or other mental health conditions, which can complicate both identification and treatment without a thorough clinical assessment.
Understanding depression as a clinical condition rather than a character trait or a phase that will simply pass is an important step for families. With appropriate and timely intervention, the majority of young people with Major Depressive Disorder respond well to evidence-based psychological treatment, and significant improvements in functioning and quality of life are achievable.
Depression in children and adolescents does not always present in the way adults might expect. While persistent sadness is a core feature, it is frequently accompanied by or in younger children sometimes replaced by irritability, frustration, or emotional reactivity. A young person with depression may appear angry or difficult rather than visibly sad, which can make the condition harder for families and educators to identify without clinical guidance.
Other common presentations include a marked loss of interest in activities that were previously enjoyed, withdrawal from friendships and family relationships, and a noticeable decline in academic performance or motivation. Fatigue, changes in sleep patterns whether sleeping significantly more or experiencing persistent insomnia and changes in appetite or weight are also frequently observed. Cognitive symptoms such as difficulty concentrating, feelings of worthlessness, excessive guilt, and a pervasive sense of hopelessness are also characteristic of the condition, particularly in older children and adolescents.
In more severe presentations, young people with Major Depressive Disorder may express thoughts of death or dying, or engage in self-harming behaviour. These presentations require prompt clinical attention. If a young person is expressing suicidal ideation or you have immediate concerns for their safety, contact Lifeline on 13 11 14 or Kids Helpline on 1800 55 1800, or present to your nearest emergency department.
Periods of low mood are a normal part of the human experience, including for children and adolescents navigating the pressures of school, social relationships, and identity development. However, when low mood is persistent, pervasive across multiple settings, and accompanied by the symptoms described above, a clinical assessment is warranted. A useful indicator for families is duration and functional impact, if a young person has been experiencing noticeable changes in mood, behaviour, or functioning for two weeks or more, and these changes are affecting their ability to engage with school, relationships, or daily life, it is appropriate to seek professional support.
Earlier intervention is associated with better outcomes in depression. Avoidance of professional support, whether due to stigma, uncertainty about the process, or a belief that things may improve on their own, can allow depressive episodes to deepen and increase the risk of recurrence. A GP is often a helpful first point of contact and can conduct an initial assessment, rule out any underlying physical health contributors, and provide a Mental Health Care Plan which enables access to Medicare rebates for psychological services.
Families are also welcome to contact Saga Psychology directly to discuss their circumstances. A formal referral is not required to make an initial enquiry, and the clinic offers in-clinic appointments in Reservoir as well as home and school-based services across Melbourne's inner northern suburbs for young people aged 3 to 22.