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Case Study – Depression – Anti-social Behaviour – Polysubstance

Patient Overview

  • Patient Name: SG
  • Age/Gender: 20-year-old Female
  • Focus Area: Depression, anti-social behaviour, Polysubstance usage
  • Duration of Care: 4 Months
  • Session Type: Weekly One-on-One Therapy
Case Study

Rebuilding Connection: Supporting a Young Person Through Trauma, Depression & Polysubstance Use

This case study involves a young person experiencing severe depression, anti-social behaviours, and harmful polysubstance use linked to a history of trauma, unstable relationships, childhood abuse, and long-term departmental care involvement. The young person presented with low self-worth, emotional dysregulation, social withdrawal, conflict with carers and peers, and increased risk of self-harm, while using cannabis and other substances as a coping mechanism.

A comprehensive intake and biopsychosocial assessment was completed to evaluate mental health, trauma history, substance dependency, wellbeing, and risk factors. A collaborative therapeutic action plan was then developed, focusing on emotional regulation, trigger awareness, harm minimisation, and building healthier coping strategies.

The intervention utilised a trauma-informed and strengths-based approach, incorporating counselling, mindfulness strategies, psychoeducation, and creative therapeutic activities including music, lyric writing, art, and storytelling to support emotional expression and self-development. Ongoing collaboration between counsellors, youth workers, and support providers ensured consistent care and monitoring throughout the process.

Outcomes included improved engagement in therapy, increased openness and positive self-talk, development of healthier coping strategies, reduced conflict behaviours, progress toward personal goals, and successful participation in casual employment.

Counselling For Drugs & Alcohol Gold Coast
Youth Drugs & Alcohol Brisbane Gold Coast

01. Mental Challenge

Young people displayed increased apathy in regard to building new relationships with peers and support figures; persistent themes of rejection and betrayal throughout lifespan from early childhood to adulthood.

  • Very low sense of self worth despite recognising values and areas of interest. Increased risk of self harm.
  • Extensive polysubstance usage to a harmful extent with daily cannabis usage to assist with self-regulation.
  • Tumultuous relationships with support figures often resulting in conflict and harmful behaviours.
  • Unstable upbringing; in care of the department from a young age. Experienced extensive abuse from family members and has had an unstable relationship throughout lifespan.

02. Care Approach

Initial intake assessment completed with onsite counsellor when first visiting the site. Intake assessment involves the collation of biopsychosocial information and the completion and assessment scales and tools to assess substance usage dependency, mental state and perception regarding quality of life. Risk of harm to self and others also assessed.

03. Psychological Assessment

  • K10 scale completed scoring high range.
  • Substance Dependency scale completed
  • WHO8 completed scoring low range
  • Background information regarding history and relationships collected.
  • Previous events resulting in underlying trauma explored at the young person's behest
  • Mental health history also explored in depth due to extensive history
  • Substance usage concern and relationship with primary substance of concern explored. Substance usage history of the young person as well as family members and peers also explored.
  • Areas of interest and social engagement were also explored.

04. The Outcomes

Throughout the support period, the young person became progressively more receptive to therapeutic intervention and participation in structured creative activities, despite initially presenting with hesitation due to previous negative experiences with support services. Over time, greater confidence in expressing thoughts and emotions was observed, alongside healthier internal dialogue and a stronger sense of self-belief. Consistent progress was made toward individual treatment objectives, with the young person also successfully transitioning into casual employment and developing more constructive ways to manage emotional responses and interpersonal conflict.

  • Increased willingness to engage in clinical sessions and creative endeavours despite expressing initial reluctance due to prior negative experiences in mental health care
  • Increased openness throughout the session.
  • Increased positive self talk.
  • Steady movement through therapeutic goals.
  • Casual employment.
  • Development of coping strategies to address feelings of anger during conflict