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Assignment questions
NursingCase studyPsychiatric mental health

Comorbid Depression and Sleep Disorder Case Study

The case hands you its dilemma. CPAP is off the table and polypharmacy is unavoidable, so the work is sequencing decisions under constraints rather than naming a condition.

Editorial process

Last reviewed · August 16, 2026

01

The dilemma is stated for you — answer that, not the diagnosis

This case is unusual in stating its own dilemma, and that is the thing to answer. Continuous positive airway pressure may not be reasonable for this patient, and polypharmacy is needed but complicated by adverse effects. Everything the assignment asks for — the questions you would put to the patient, the collateral sources, the additional examinations or testing, the differential, the medication review — feeds those two constraints. Start with the relationship the case is built on: depression and sleep disorder are bidirectional, and untreated obstructive sleep apnoea is one of the best-documented reasons an antidepressant fails to work. Treatment-resistant depression in a patient with disrupted sleep is very often not resistant at all — it is being treated while the thing sustaining it goes untreated. Saying that early frames the whole case correctly. Say it in the first two sentences and everything you do afterwards has a reason.

Build the questions from the differential rather than asking generically. You need sleep history in detail: schedule, latency, awakenings, snoring, witnessed apnoeas, morning headache, daytime sleepiness, and what the late-night television is actually doing, since screen exposure and conditioned arousal are treatable causes that require no medication at all. Collaterals matter here because the patient cannot report what happens while she is asleep — a bed partner, an adult child, or a nursing home aide sees what she cannot. For testing, ask what would change management rather than listing everything available. The medication section then needs sequencing: review what she takes now for interactions, sedative load and anticholinergic burden; consider whether a single agent could address more than one target; and prefer cognitive behavioural therapy for insomnia as first-line before adding another drug, because the case's own dilemma is that adding drugs is where the harm is.

Likely learning objectives

Inferred from the brief — check these against your own rubric.

  • 01
    Recognise the bidirectional relationship between depression and sleep disorder.
  • 02
    Build interview questions from a working differential.
  • 03
    Identify collateral sources for information the patient cannot supply.
  • 04
    Sequence treatment decisions under a stated polypharmacy constraint.
Assignment instructionsQuoted verbatim

Read the full question

Review every instruction before using the planning guidance that follows.

The Case: The woman who liked late-night TV The Question: What to do when comorbid depression and sleep disorders are resistant to treatment The Dilemma: Continuous positive airway pressure (CPAP) may not be a reasonable option for treating apnea; polypharmacy is needed but complicated by adverse effects. Review the patient intake documentation, psychiatric history, patient file, medication history, etc. As you progress through each section, formulate a list of questions that you might ask the patient if he or she were in your office. · Based on the patient’s case history, consider other people in his or her life that you would need to speak to or get feedback from (i.e., family members, teachers, nursing home aides, etc.). · Consider whether any additional physical exams or diagnostic testing may be necessary for the patient. · Develop a differential diagnoses for the patient. Refer to the DSM-5 in this week’s Learning Resources for guidance. · Review the patient’s past and current medications. Refer to Stahl’s Prescriber’s Guide and consider medications you might select for this patient. · Review the posttest for the case study. Learning Resources Stahl, S. M. (2013). Stahl’s essential psychopharmacology: Neuroscientific basis and practical applications (4th ed.). New York, NY: Cambridge University Press. Stahl, S. M. (2014b). The prescriber’s guide (5th ed.). New York, NY: Cambridge University Press. Review the following medications: For insomnia · alprazolam · amitriptyline · amoxapine · clomipramine · clonazepam · desipramine · diazepam · doxepin · flunitrazepam · flurazepam · hydroxyzine · imipramine · lorazepam · nortriptyline · ramelteon · temazepam · trazodone · triazolam · trimipramine · zaleplon · zolpidem American Psychiatric Association. (2013). Diagnostic and statistical manual of mental disorders (5th ed.). Washington, DC: Author. Davidson, J. (2016). Pharmacotherapy of post-traumatic stress disorder: Going beyond the guidelines. British Journal of Psychiatry, 2(6), e16-e18. doi:10.1192/bjpo.bp.116.003707. Retrieved from http://bjpo.rcpsych.org/content/2/6/e16 Differential diagnoses The case Study PATIENT FILE The Case: The woman who liked late-night TV The Question: What to do when comorbid depression and sleep disorders are resistant to treatment The Dilemma: Continuous positive airway pressure (CPAP) may not be a reasonable option for treating apnea; polypharmacy is needed but complicated by adverse effects Pretest self-assessment question (answer at the end of the case) Which of the following hypnotic agents is less likely to be addictive, impair psychomotor function, or cause respiratory suppression? A. Ramelteon (Rozerem) B. Zolpidem (Ambien) C. Doxepin (Silenor) D. Temazepam (Restoril) E. A and C F. B and D G. None of the above Patient evaluation on intake • 70-year-old female with a chief complaint of “being sad” • Feels she had been doing well until her hearing began to diminish in both ears – Candidate for cochlear implants in the future, but this is a long way off – Despite the promise of improved hearing, she often has crying spells for no clear reason Psychiatric history • The patient has been without psychiatric disorder throughout her life • Has felt increasingly sad over the last year and these feelings were not triggered by an acute stressor • Lives alone with the help of a home aide – Her spouse died many years ago due to CAD – Despite her aide and her son who visits often, she is having a harder time coping with both instrumental and basic activities of daily living • She admits to full MDD symptoms Differential diagnoses – She is sad, has lost interest in things she used to enjoy, and is fatigued with poor focus and concentration – Denies feelings of guilt, worthlessness, or any suicidal thoughts – Appears mildly psychomotor slowed – Additionally states that sleep is “awful” ◦ Does not fall asleep easily as her legs “ache and jump” ◦ Takes frequent naps during the day as a result ◦ She admits to snoring frequently • There is no evidence of cognitive decline or memory problems • She has a supportive son who accompanies her to all appointments and helps provide her care Social and personal history • Graduated high school, was married, and raised her children • Denied any academic issues, learning disability, or ADHD symptoms growing up • Having and maintaining friendships has been easy and successful over the years • At times, she is lonely at home • Her mobility has declined somewhat, which limits her going out • Participates in activities at a local elders’ center • No history of drug or alcohol problems Medical history • HTN • Hypothyroidism • CAD • Anemia • Environmental allergies • Obesity Family history • Reports AUD throughout her extended family • MDD reportedly suffered by her mother Medication history • Never taken psychotropic medications Psychotherapy history • Recently, has gone to a few sessions of outpatient supportive psychotherapy, but her hearing loss makes this modality almost impossible – Hearing aids have failed to help – May be a candidate for cochlear implants • She has a fax machine at home and states that she and her therapist often fax notes back and forth, which she finds helpful as receiving them brightens her mood – Perhaps this is “supportive facsimile therapy” Differential diagnoses
02

Turn the brief into deliverables

  1. 01
    Questions you would ask the patient, tied to differentials.
  2. 02
    Named collateral informants and what each could contribute.
  3. 03
    Additional physical exams or diagnostic testing, with what each would change.
  4. 04
    Differential diagnoses referenced to DSM-5 criteria.
  5. 05
    A medication review addressing interactions and adverse effects.
  6. 06
    A treatment plan that respects the case's stated constraints.
03

Questions, collaterals, testing, differentials, then the medication problem

01

The relationship between the two conditions

Establish bidirectionality and what it implies about resistance.

02

Questions for the patient

Build a targeted sleep and mood history.

03

Collateral sources

Identify who can report what the patient cannot.

04

Examination and testing

Select investigations by what they would change.

05

Differential diagnoses

Work through DSM-5 criteria for the plausible conditions.

06

Medication review and plan

Address interactions, sedative burden and sequencing.

04

Sleep medicine guidance alongside the psychopharmacology

Recommended databases

  • American Academy of Sleep Medicine
  • NCBI Bookshelf
  • PubMed Central
  • Stahl's Prescriber's Guide

Search sequence

  1. 1.
    Read the current insomnia treatment guideline before proposing any medication.
  2. 2.
    Check the interaction and adverse effect profile of each drug she already takes.
  3. 3.
    Look up the evidence on untreated apnoea and antidepressant response.
  4. 4.
    Confirm DSM-5 criteria rather than working from recollection.
05

Reference shortlist

These are authoritative starting points, not a ready-made bibliography. A qualified reviewer must confirm that each source fits the assignment and supports the claim beside which it is cited.

Nothing here is cleared for citation until you have read it.

  1. 01

    Combination treatment for chronic insomnia disorder in adults: an American Academy of Sleep Medicine clinical practice guideline

    Journal of Clinical Sleep Medicine, American Academy of Sleep Medicine · 2026

    The current clinical practice guideline on combination treatment for chronic insomnia.

  2. 02

    Pharmacotherapy Treatment Options for Insomnia: A Primer for Clinicians

    International Journal of Molecular Sciences · 2015

    A clinician's primer on insomnia pharmacotherapy, including what each agent costs in adverse effects.

  3. 03

    Residual effects of zopiclone 7.5 mg on highway driving performance in insomnia patients and healthy controls

    Psychopharmacology · 2014

    Residual next-day impairment from a hypnotic — the concrete risk behind the polypharmacy warning.

  4. 04

    Sertraline

    StatPearls, NCBI Bookshelf, National Library of Medicine · 2023

    A worked antidepressant monograph for the interaction and adverse effect review.

  5. 05

    Sexual dysfunction associated with antidepressants and antipsychotics: a structured narrative review

    Therapeutic Advances in Psychopharmacology · 2026

    Adverse effects that patients stop medication for, which is where adherence questions belong.

06

Review before submission

Common mistakes

  • Treating the depression as resistant without investigating the sleep disorder.
  • Listing every possible test rather than those that would change management.
  • Adding a hypnotic without considering behavioural treatment first.
  • Ignoring the stated dilemma and proposing CPAP anyway.

Submission checklist

  • Does every question you list connect to a differential?
  • Have you named who could report on her sleep?
  • Does each test have a stated consequence for management?
  • Does the plan work within the CPAP and polypharmacy constraints?

Use this guide to plan and review your own work. Follow your institution's rules and read our academic-integrity policy.

Written by

Aaron Bishop

MA, Education

assignment interpretation and research-methods coaching across disciplines

Aaron leads the EssayCrackers editorial desk. He works on how assignment briefs are read — what a rubric is actually asking for, and where students most often answer a different question than the one set.

Reviewed by

Dr. Nathan Cole

PhD, Rhetoric & Composition

Argumentation and thesis development

Nathan teaches first-year composition and directs a university writing center. He reviews EssayCrackers guides for argumentative soundness and citation accuracy.

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