| Course | NR 547 Differential Diagnosis in Psychiatric-Mental Health across the Lifespan Practicum |
|---|---|
| Week | 5 |
| Paper type | Case analysis |
| Length | About 1,110 words, 2 pages |
| Format | APA 7 student paper |
| School | Chamberlain University |
| Program | MSN, Psychiatric-Mental Health Nurse Practitioner (PMHNP) |
| Updated | September 2026 |
Free sample paper for NR 547 Week 5
Case Analysis: Bipolar II Disorder or Stimulant-Induced Mood Disorder in a Doctoral Student, Decided by When a Five-Day Summer Period Happened Relative to the First Amphetamine Tablet
Student Name
College of Nursing, Chamberlain University
NR 547: Differential Diagnosis in Psychiatric-Mental Health Across the Lifespan
Instructor Name
Month Day, Year
Case Analysis: Bipolar II Disorder or Stimulant-Induced Mood Disorder in a Doctoral Student, Decided by When a Five-Day Summer Period Happened Relative to the First Amphetamine Tablet
Two Candidates at Once
The case is a 24-year-old doctoral student with a current major depressive episode, a five-day period of elevated energy two summers ago and 14 months of nonprescribed amphetamine use. Two labels can explain the whole history, and this analysis runs them against the same facts rather than describing each in turn.
Bipolar II disorder, current episode depressed. The summer period was a hypomanic episode, the current episode is a major depressive episode, and the stimulant use is a separate problem layered on a primary bipolar illness.
Stimulant-induced bipolar and related disorder, with a later depressive episode. The elevated period was produced by a substance, so it cannot count toward a bipolar diagnosis, and the current episode is either a substance-related depression or a first episode of major depressive disorder.
The choice matters. It decides whether the student should receive an antidepressant alone, which is reasonable for major depressive disorder, or treatment that avoids antidepressant monotherapy, which is recommended when bipolar disorder is present.
The Contested Facts
Several facts pull in both directions, and they are marked here as they are weighed.
The elevated period's features. Sleeping three or four hours without fatigue, rapid speech, launching several projects and a large, uncharacteristic purchase of camera gear are all typical of hypomania. They are also typical of amphetamine use. On their own, they do not separate the candidates.
Its duration. The sibling describes about five days. A hypomanic episode requires at least four consecutive days (American Psychiatric Association, 2022), so the duration fits bipolar II. Stimulant-induced elevation usually tracks the drug's presence, lasting hours to a day or two after a dose, which fits less well with five continuous days, but a person using repeatedly could sustain it.
The family history. A parent treated with lithium raises the likelihood of a primary bipolar illness, but family history does not rule out a substance cause in any individual.
The current episode's features. Hypersomnia and increased appetite occur in both bipolar depression and stimulant withdrawal.
The student's own account. The student denies stimulant use at the time of the summer period, but recall of substance use two years ago is imperfect and the student has reasons to minimize it.
The base rate of stimulant use. Nonmedical use of prescription stimulants is common enough among students (McCabe et al., 2005) that the question could not be limited to the present; it had to be asked specifically about the summer two years ago.
The Feature That Separates Them
The conditions part on one point: whether the elevated period occurred when a substance could have caused it. A hypomanic episode that is fully explained by a substance's physiological effects does not count toward bipolar disorder. An episode that occurred with no substance present does.
Applied to this record, the dating is specific. The camera purchase receipts, which the student found in an email account, are dated between July 12 and July 16 two summers ago. The sibling's phone photographs of the student's new projects are dated the same week. The student's first use of the friend's amphetamine tablets was in January of the following year, about six months later, a date the student ties to a particular exam and which the friend confirmed in a text message the student chose to show. The student denies cocaine, high-dose caffeine products, decongestants or any other stimulant that summer. The student was on a supervised research placement at the time, and the placement supervisor's written evaluation, which the student shared, describes the student as "energetic and full of ideas in mid-July."
The elevated period therefore came before any known stimulant exposure. Under the criteria, it can count as a hypomanic episode.
The Call
The call is bipolar II disorder, with the present episode depressive and of moderate to severe intensity. The criteria for bipolar II are a lifetime hypomanic episode, a lifetime major depressive episode and no manic episode, with neither explained better by another disorder. The summer period meets the hypomanic criteria on symptoms, duration and an observable change noted by others, without the marked impairment or hospitalization that would make it manic. It was followed a few weeks later by a month of low mood that may itself have been a depressive episode, and the current episode meets full criteria. Nonmedical stimulant use is recorded separately, with severity to be assessed.
This call is consistent with what is known about how often bipolar disorder is missed. In a large study of patients presenting with depression, many met criteria for undiagnosed bipolar disorder when asked specifically about hypomanic symptoms (Angst et al., 2011). The student did not volunteer the summer period; it emerged only through collateral history.
What Would Reverse It
Two findings would reverse the call. Evidence that the student used amphetamine or another stimulant during the July period, for instance a message or a pharmacy record from that time, would remove the hypomanic episode from consideration and leave major depressive disorder, with a stimulant-induced elevated period in the history. And if a future elevated period occurs only during stimulant use, it would not strengthen the bipolar diagnosis, though it would not undo the July episode either.
A finding that would not reverse the call is a response to an antidepressant. Some patients with bipolar II disorder respond to antidepressants, so response is not diagnostic.
Nor would the shape of the current episode decide it. Bipolar and unipolar depressions overlap heavily in their features, which is why the diagnosis rested on the history of the July period rather than on the present episode.
Consequence
Getting this right matters for treatment. Antidepressant monotherapy in bipolar disorder carries a risk of switching into hypomania or mania and of rapid cycling, so current practice favors treatments with evidence in bipolar depression. Stimulant use is especially important to address, because stimulants can themselves precipitate elevated mood in a person with bipolar disorder. The student will also need to know the diagnosis and its implications, including the value of regular sleep and early recognition of elevated periods. The diagnosis should be reviewed as the history develops; bipolar II is a longitudinal diagnosis, and what happens over the next year will test it.
References
American Psychiatric Association. (2022). Diagnostic and statistical manual of mental disorders (5th ed., text rev.). https://doi.org/10.1176/appi.books.9780890425787
Angst, J., Azorin, J.-M., Bowden, C. L., Perugi, G., Vieta, E., Gamma, A., & Young, A. H. (2011). Prevalence and characteristics of undiagnosed bipolar disorders in patients with a major depressive episode: The BRIDGE study. Archives of General Psychiatry, 68(8), 791-798. https://doi.org/10.1001/archgenpsychiatry.2011.87
McCabe, S. E., Knight, J. R., Teter, C. J., & Wechsler, H. (2005). Non-medical use of prescription stimulants among US college students: Prevalence and correlates from a national survey. Addiction, 100(1), 96-106. https://doi.org/10.1111/j.1360-0443.2005.00944.x
Reading the NR 547 Week 5 instructions
In the fifth week, the case handed to you could support two diagnoses, and the job is to decide between them. The prompt usually wants the case, the competing diagnoses, the evidence for each, the deciding factor, your conclusion and its implications. Name both candidate diagnoses together at the start, so the paper stays a comparison. As facts appear, mark which ones pull in different directions. Identify the single feature the two conditions treat differently, often sequence, duration or context, and apply it openly to this record. State the decision without hedging, then say what evidence would reverse it and what would not. Explain the consequences of the decision for treatment and for the patient. Support the criteria and base rates with sources cited in APA 7.
How the NR 547 Week 5 example is put together
The analysis opens with both labels, bipolar II disorder and a stimulant-induced mood disorder, and explains why the choice matters for treatment. A section flags contested facts: the elevated period's features, its five-day duration, the family history, the current episode's features, the student's own account and the base rate of stimulant use. The separating feature is whether the elevated period occurred when a substance could have caused it, and the record dates it by receipts, photographs, a supervisor's evaluation and a friend's message. The call is bipolar II disorder, supported by evidence that bipolar illness is often missed. A section lists findings that would reverse the call and one that would not. The final section covers treatment consequences and longitudinal review.
Where the points sit in the NR 547 Week 5 rubric
Two-diagnosis analyses are commonly assessed on fair presentation of both candidates, careful weighing of evidence, identification of a decisive feature, a clear conclusion and discussion of implications. Naming both diagnoses together and weighing facts as they appear shows the comparison is real. Identifying one specific separating feature, and applying it to documented evidence, is where most of the credit sits. A decision stated plainly, followed by what would reverse it, shows confidence balanced with rigor. Noting what would not reverse it, such as response to treatment, shows deeper understanding. Discussing consequences for treatment and education connects diagnosis to care. Criteria and research cited accurately in APA 7 support the conclusion.
NR 547 Week 5 help from the desk
Analyses often describe each disorder in turn and never find where they differ in this patient. Put them side by side. Another weakness is sorting facts silently, so the reader cannot see which pull in which direction. Flag them. Some students hedge the conclusion into a list of possibilities. Make the call, then say what would change it. Avoid relying on features the two conditions share, such as hypersomnia, to decide between them. Seek documentary or collateral evidence for dates and sequences when self-report is uncertain. Explain why the diagnosis matters for treatment, since that is the reason the distinction is worth making. Remember that some diagnoses are longitudinal, and say how the decision will be reviewed.
Get a NR 547 Week 5 example written to your instructions
Send the Week 5 instructions and the case your classroom posted, and a custom example is argued out for that history and returned inside 24 to 48 hours. The first one is free. Which way you would call a patient of your own remains your judgment to make.
More NR 547 papers and PMHNP samples
- NR 547 Week 1: Diagnostic Position Discussion
- NR 547 Week 2: Criteria Mapping Write-Up
- NR 547 Week 3: Diagnostic Formulation
- NR 547 Week 4: Rule Out Analysis
- NR 547 Week 6: Lifespan Variation Write-up
- NR 547 Week 7: Medical Mimic Brief
- NR 547 Week 8: Diagnostic Case Paper
- NR 546 Week 5: Partial Response Case Analysis
NR 547 Week 5 questions, answered
What if I genuinely think it is the other one?
Then argue for that. These vignettes are usually built so either label can be defended, and the grade sits on the quality of the defense rather than on matching a hidden answer. What loses marks is a defense that ignores the material pointing the other way. Name the strongest fact against your call, explain why it does not decide the case, and the paper gets stronger.
Can I keep both diagnoses?
Sometimes, when the assignment allows it and the history supports two conditions running together, which is common enough in practice. What does not work is using comorbidity to dodge a decision the case was built to force. If both are kept, say which is primary for treatment purposes and why, and show that each one meets its own criteria on its own evidence.
How much of the vignette should be repeated?
Only the facts your argument uses, and each one only once. Graders have the case in front of them, so retelling it consumes the words comparison needs. A useful check is whether a detail appears twice in the paper: if it does, the second appearance is usually a summary that could go, leaving room for the analysis itself.
Where can I find a free NR 547 Week 5 sample paper?
The bipolar II versus stimulant-induced analysis appears above as the NR 547 Week 5 sample, with nothing held back. If your case splits between two other diagnoses, send us the history and an analysis finding the deciding fact can be written.
What decides between the two diagnoses in the NR 547 Week 5 sample?
Timing. The elevated period is dated by receipts, a supervisor's note and a friend's message to half a year before any stimulant use, so it counts as hypomania.