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ULTIMATE 2026/2027 IHUMAN CASE STUDY:
CHRONIC MECHANICAL LOW BACK PAIN (54-
YEAR-OLD MALE, WEEK 9) – A+ GUIDE WITH
CLINICAL REASONING, DIFFERENTIAL,
EXPECTED LABS & MANAGEMENT | FIRST-
ATTEMPT PASS GUARANTEED**
> *Disclaimer: This is a fictional iHuman case study created for
educational purposes only. It is not an official iHuman answer key.
Always verify with your course materials and instructor. This guide
follows clinical guidelines (ACP/ASIPP 2022–2026 updates).*
---
## 1. Case Overview & Chief Complaint
| Element | Detail |
|---------|--------|
| **Age / Gender** | 54-year-old male |
| **Chief Complaint (CC)** | “My lower back has been hurting for
months. It’s worse when I bend or sit for a long time.” |
| **Setting** | Outpatient primary care clinic |
| **Week in Course** | Week 9 (musculoskeletal focus) |
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| **Urgency Level** | Non-emergent – chronic |
---
## 2. History of Presenting Illness (HPI) – OLDCARTS
| Mnemonic | Finding |
|----------|---------|
| **O**nset | Gradual, ~8 months ago after starting warehouse job |
| **L**ocation | Lumbar region (L4–S1), midline, no radiation past
buttocks |
| **D**uration | Constant ache, worse with activity; morning stiffness
<30 min |
| **C**haracter | Dull, aching; no burning or shooting |
| **A**lleviating | Lying down, heat, ibuprofen (partial relief) |
| **R**adiating | None below gluteal folds |
| **T**ime course | Progressive over months but fluctuates |
| **S**everity | 5/10 baseline; 7/10 with bending/lifting |
> **Additional HPI details:**
> - No trauma, no falls, no heavy lifting injury.
> - No cauda equina symptoms (no urinary retention, incontinence,
saddle anesthesia).
ULTIMATE 2026/2027 IHUMAN CASE STUDY:
CHRONIC MECHANICAL LOW BACK PAIN (54-
YEAR-OLD MALE, WEEK 9) – A+ GUIDE WITH
CLINICAL REASONING, DIFFERENTIAL,
EXPECTED LABS & MANAGEMENT | FIRST-
ATTEMPT PASS GUARANTEED**
> *Disclaimer: This is a fictional iHuman case study created for
educational purposes only. It is not an official iHuman answer key.
Always verify with your course materials and instructor. This guide
follows clinical guidelines (ACP/ASIPP 2022–2026 updates).*
---
## 1. Case Overview & Chief Complaint
| Element | Detail |
|---------|--------|
| **Age / Gender** | 54-year-old male |
| **Chief Complaint (CC)** | “My lower back has been hurting for
months. It’s worse when I bend or sit for a long time.” |
| **Setting** | Outpatient primary care clinic |
| **Week in Course** | Week 9 (musculoskeletal focus) |
, 2|Page
| **Urgency Level** | Non-emergent – chronic |
---
## 2. History of Presenting Illness (HPI) – OLDCARTS
| Mnemonic | Finding |
|----------|---------|
| **O**nset | Gradual, ~8 months ago after starting warehouse job |
| **L**ocation | Lumbar region (L4–S1), midline, no radiation past
buttocks |
| **D**uration | Constant ache, worse with activity; morning stiffness
<30 min |
| **C**haracter | Dull, aching; no burning or shooting |
| **A**lleviating | Lying down, heat, ibuprofen (partial relief) |
| **R**adiating | None below gluteal folds |
| **T**ime course | Progressive over months but fluctuates |
| **S**everity | 5/10 baseline; 7/10 with bending/lifting |
> **Additional HPI details:**
> - No trauma, no falls, no heavy lifting injury.
> - No cauda equina symptoms (no urinary retention, incontinence,
saddle anesthesia).
