Tanya's Substance Abuse Case: Assessment, Diagnosis & Treatment
This case study examines Tanya, a woman with a history of childhood physical and sexual abuse whose trauma led to polysubstance dependence involving cocaine, crack, heroin, and alcohol. The paper applies the Addiction Severity Index (ASI) and a twelve-step assessment process to evaluate her condition across medical, psychological, legal, and social domains. It reviews the pharmacodynamics and pharmacokinetics of her substance use, offers a DSM-5 polysubstance abuse diagnosis, and identifies the biological, environmental, and psychological factors shaping her case. Treatment recommendations include detoxification, naltrexone or methadone for withdrawal, cognitive behavioral therapy (CBT), trauma-focused therapy, and group therapy to establish a support network. Relapse prevention and ethical considerations related to her incarceration are also addressed.
- Overview of Tanya's Case: Background: abuse, addiction, arrest, and withdrawal
- Assessment and Diagnosis: ASI tool and twelve-step clinical assessment process
- Pharmacodynamics, Pharmacokinetics, and Diagnosis: Drug effects on brain and DSM-5 polysubstance diagnosis
- Mental Health Issues and Contributing Factors: Trauma, self-medication, and biopsychosocial factors
- Treatment Recommendations and Main Techniques: CBT, pharmacotherapy, group and trauma-focused therapy
- Risk Factors, Relapse Prevention, and Ethical Issues: Relapse structure, post-incarceration support, ethics
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What makes this paper effective
- Systematically applies recognized clinical tools — the Addiction Severity Index and the twelve-step assessment framework — to a concrete case, grounding abstract methods in real patient circumstances.
- Integrates multiple levels of analysis (biological, psychological, environmental, and social) to build a holistic picture of the client, reflecting a biopsychosocial approach.
- Connects theory to practice by invoking Maslow's hierarchy of needs and DSM-5 diagnostic criteria to justify specific treatment choices rather than listing them arbitrarily.
Key academic technique demonstrated
The paper demonstrates evidence-based clinical reasoning: each recommendation — CBT, pharmacological intervention, group therapy, trauma-focused therapy — is tied explicitly to an assessed need or a cited source. This prevents the treatment section from reading as a generic checklist and instead shows the reader how diagnosis drives intervention.
Structure breakdown
The paper follows a standard clinical case-study structure: (1) narrative case overview, (2) assessment tools and process, (3) pharmacology and formal diagnosis, (4) mental health and contributing factors, (5) treatment recommendations and techniques, and (6) risk factors, relapse prevention, and ethics. Each section builds on the previous one, moving from description to analysis to intervention planning — a logical progression that mirrors real-world clinical workflow.
Overview of Tanya's Case
Tanya was physically and sexually abused as a child, which caused her to experience depression and anxiety. As a way of coping with her situation and the symptoms she felt, she turned to drugs and alcohol. This only exacerbated the situation, however, as she began chasing ever-fleeting and harder-to-obtain highs. She ran away from home as a teenager and ended up on the streets, selling her body for money or drugs and eventually selling drugs herself. Years went by in a blur as her addiction to cocaine, crack, heroin, and alcohol took its toll on her body. She had no support system, continued to be abused by those in her environment, and was finally arrested for possession.
Tanya went through withdrawal in prison, which made her feel worse than anything she had experienced before — "like hell," in her own words (The Louis de la Parte Florida Mental Health Institute, 2002, p. 24). Tanya needed an intervention to help her reclaim her mind and regain some control over her body. She also desperately needed a support system — something she had never had before in her life. This support system would enable her to fulfill her most basic needs, according to Maslow's (1943) hierarchy of needs theory.
Assessment and Diagnosis
The Addiction Severity Index (ASI) is a useful tool for assessing Tanya, as it structures the interview process around seven distinct areas: (1) medical conditions, (2) employment/support, (3) use of alcohol and drugs, (4) legal issues, (5) family history, (6) family/social relationships, and (7) psychiatric disorders (Samet, Waxman, Hatzenbuehler, & Hasin, 2007).
There are twelve steps to any thorough assessment process (Sacks & Ries, 2005):
Assessment Step 1: Engage the Client — the rationale being to obtain information directly from the source.
Assessment Step 2: Identify and Contact Collaterals (Family, Friends, Other Providers) to Gather Additional Information — so as to obtain information from secondary sources.
Assessment Step 3: Screen for and Detect Co-Occurring Disorders — so as to understand the full scope of the patient's problems.
Assessment Step 4: Determine Quadrant and Locus of Responsibility — so as to understand the best approach to treatment.
Assessment Step 5: Determine Level of Care — so as to design an adequate and effective intervention.
Assessment Step 6: Determine Diagnosis — so as to be able to treat effectively.
Assessment Step 7: Determine Disability and Functional Impairment — so as to understand obstacles beyond the patient's current level of control.
Assessment Step 8: Identify Strengths and Supports — so as to ensure that intervention will be efficacious.
Assessment Step 9: Identify Cultural and Linguistic Needs and Supports — so as to ensure that treatment is holistic.
Assessment Step 10: Identify Problem Domains — so as to understand potential threats to successful intervention.
Assessment Step 11: Determine Stage of Change — so as to plan treatment appropriately.
Assessment Step 12: Plan Treatment — so as to implement the intervention strategically.
Pharmacodynamics, Pharmacokinetics, and Diagnosis
According to Gorelick and Baumann (2016), "Chronic cocaine or amphetamine abuse is associated with cognitive impairment that may persist for at least several months of abstinence. Most affected are visuomotor performance, attention, inhibitory control, and verbal memory. Several studies have found abnormalities of behavioral regulation and risk–reward decision making. This type of impairment is associated with lesions of the frontal cortex, a brain area that shows decreased regional blood flow and metabolic activity in abstinent cocaine abusers" (p. 230). Tanya's addiction to crack has impaired her mental and physical condition. Her use of alcohol and heroin to facilitate sleep after physical highs indicates her reliance on chemicals to function normally. The pharmacodynamics and pharmacokinetics of her drug and alcohol abuse are detailed in the charts provided by Martin and Patel (2016).
According to the DSM-5, Tanya may be diagnosed with polysubstance abuse, as "among opioid addicts, cocaine and alcohol are the most frequently abused substances" — which is exactly Tanya's case ("Signs and Symptoms of Polysubstance Abuse," 2015). The criteria for this diagnosis include a strong desire to use, continued use despite consequences, a long history of use, an inability to quit, taking large quantities of the substance, and becoming impaired by the substance. Assessment tools for confirming the substances used include urine testing and various structured assessment techniques.
Tanya suffers from substance dependence: she experiences harrowing physical symptoms as a result of withdrawal, cannot think clearly, cannot cope physically, and requires increasing amounts of the substances to achieve the desired effect. Her abuse of drugs and alcohol has continued for an extended period of her life, placing her clearly within the category of substance dependence rather than mere abuse.
References
Ekinci, S., & Kandemir, H. (2015). Childhood trauma in the lives of substance-dependent patients: The relationship between depression, anxiety and self-esteem. Nordic Journal of Psychiatry, 69(4), 249–253.
Giordano, A., Prosek, E., Stamman, J., et al. (2016). Addressing trauma in substance abuse treatment. Journal of Alcohol and Drug Addiction, 60(2), 55–71.
Gorelick, D., & Baumann, M. (2016). The pharmacology of cocaine. Retrieved from https://basicmedicalkey.com/the-pharmacology-of-cocaine-amphetamines-and-other-stimulants/
The Louis de la Parte Florida Mental Health Institute. (2002). Co-occurring disorders treatment workbook. Retrieved from http://scholarcommons.usf.edu/cgi/viewcontent.cgi?article=1593&context=mhlp_facpub
Martin, P., & Patel, S. (2016). Pharmacology of drugs of abuse. Retrieved from https://basicmedicalkey.com/pharmacology-of-drugs-of-abuse/
Maslow, A. H. (1943). A theory of human motivation. Psychological Review, 50(4), 370.
Sacks, S., & Ries, R. K. (2005). Substance abuse treatment for persons with co-occurring disorders. Treatment Improvement Protocol (TIP) Series 42. Substance Abuse and Mental Health Services Administration.
Samet, S., Waxman, R., Hatzenbuehler, M., & Hasin, D. S. (2007). Assessing addiction: Concepts and instruments. Addiction Science & Clinical Practice, 4(1), 19.
Signs and symptoms of polysubstance abuse. (2015). Buppractice. Retrieved from
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