PLAB 2 History Taking: Mastering Abdominal Pain Scenarios

Why Abdominal Pain Dominates PLAB 2 History Stations

Abdominal pain is one of the highest-yield presentations in the PLAB 2 exam. Examiners love it because it tests your ability to rapidly differentiate between benign and life-threatening causes, construct a sensible differential, and communicate safely — all within eight minutes. Whether it's a 25-year-old with right iliac fossa pain or a 70-year-old with epigastric discomfort, the underlying principles remain the same.

The Eight-Minute Blueprint

1. Open the Consultation (30 seconds)

Start with a warm, professional introduction and an open question:

"Hello, my name is Dr [Name], I'm one of the doctors here. I understand you've been having some tummy pain — could you tell me more about that?"

Let the patient speak uninterrupted for 15–20 seconds. This single act demonstrates active listening and often reveals the diagnosis before you ask a single targeted question.

2. SOCRATES: The Pain Framework (2–3 minutes)

This is the backbone of your history. Use SOCRATES systematically:

Examiner Tip: Don't just rattle through SOCRATES mechanically. React to answers — if the pain radiates to the back, explore pancreatitis or AAA. If it's colicky, think renal stones or biliary colic.

3. Associated Symptoms — The Deal-Breakers (2 minutes)

This is where PLAB 2 candidates lose marks. You must screen for:

Gastrointestinal

• Vomiting — Is it bilious? Faeculent? Blood-stained (haematemesis)?

• Appetite changes — Anorexia is a key feature of appendicitis

• Swallowing difficulties — Dysphagia/odynophagia

• Bowel habits — Constipation, diarrhoea, mucus, blood (PR bleeding), or absolute constipation with no flatus (obstruction red flag)

• Nausea — Temporal relationship to pain matters

Urinary

• Dysuria, frequency, urgency — UTI or pyelonephritis

• Haematuria — Renal stones, malignancy

• Colicky pain radiating to groin — Classic ureteric colic

Gynaecological (critical for female patients)

• LMP — Could this be pregnancy-related?

• Vaginal bleeding/discharge — Ectopic, PID

• Contraception — IUD, missed pills

Systemic

• Fever/rigors — Infection, abscess, cholangitis

• Weight loss — Malignancy red flag

• Night sweats — Lymphoma, TB

• Jaundice — Biliary obstruction, hepatitis

4. Past Medical & Surgical History (45 seconds)

Ask specifically about:

• Previous abdominal surgeries — adhesions are a leading cause of small bowel obstruction

• Gallstones, kidney stones, pancreatitis — recurrence patterns

• Inflammatory bowel disease, peptic ulcer disease

• Cardiovascular disease — mesenteric ischaemia in AF

• Diabetes — atypical presentations, immunosuppression

5. Drug History & Allergies (30 seconds)

Focus on GI-relevant medications:

• NSAIDs, aspirin, anticoagulants — bleeding risk

• PPIs, antacids — suggests pre-existing dyspepsia

• Antibiotics — recent use raises C. difficile risk

• Opioids — constipation/obstruction

• Oral contraceptives — hepatic adenoma risk

Don't forget: Always ask about allergies and document them clearly.

6. Social History (30 seconds)

Keep it focused but thorough:

• Alcohol intake — quantified in units/week (pancreatitis, gastritis)

• Smoking — malignancy risk, vascular disease

• Diet — fibre intake, recent changes

• Recent travel — infectious causes

• Occupation and home situation — impact on management

7. ICE — Ideas, Concerns, Expectations (30 seconds)

This is non-negotiable in PLAB 2. The examiner is scoring this explicitly:

"I want to make sure I've understood what's going on for you. What do you think might be causing this pain? Is there anything in particular you're worried about? What were you hoping we might do today?"

Common patient concerns include fear of cancer, worry about surgery, or anxiety about missing work.

8. Wrap-Up & Safety Netting (30 seconds)

Summarise your findings, state your differential diagnosis, and explain the plan:

"Based on what you've told me, the pain could be related to your appendix, your gallbladder, or possibly a kidney stone. I'd like to examine your tummy, run some blood tests, and likely organise a scan. While we're waiting, if the pain gets significantly worse, you develop a fever, or you start vomiting, please let the nursing staff know immediately."

High-Yield PLAB 2 Abdominal Pain Scenarios

Scenario 1: Acute Appendicitis

• Key features: Central pain migrating to RIF over 12–24 hours, anorexia, nausea, low-grade fever

• Red flags: RIF pain with peritonism, high fever, sepsis

• Differential: Mesenteric adenitis, ectopic pregnancy, ovarian torsion, UTI

Scenario 2: Biliary Colic / Cholecystitis

• Key features: RUQ pain after fatty food, radiating to right shoulder, nausea/vomiting

• Red flags: Fever + jaundice + RUQ pain = Charcot's triad (cholangitis — emergency)

• Differential: Hepatitis, peptic ulcer, MI (atypical)

Scenario 3: Bowel Obstruction

• Key features: Colicky central abdominal pain, distension, vomiting (early = high obstruction; late/feculent = low), absolute constipation

• Red flags: Peritonism, sepsis, strangulation signs

• Differential: Paralytic ileus, gastroenteritis, mesenteric ischaemia

Scenario 4: Acute Pancreatitis

• Key features: Sudden severe epigastric pain radiating to back, vomiting, relieved by sitting forward

• Red flags: Hypotension, oliguria, SpO₂ < 90%, confusion (markers of severe pancreatitis)

• Ask about alcohol and gallstone history explicitly

Scenario 5: Ectopic Pregnancy

• Key features: Lower abdominal pain + missed period + vaginal bleeding in a woman of reproductive age

• Red flags: Shoulder tip pain (referred from diaphragmatic irritation), syncope, signs of shock = ruptured ectopic (category 1 emergency)

Common Mistakes That Cost Marks

Red Flags You Must Never Miss

1. Haemodynamic instability — BP < 90 systolic, HR > 110, signs of shock

2. Peritonitic signs — rigid abdomen, guarding, rebound tenderness (note: these are found on examination, but ask about severe pain with movement)

3. Progressive jaundice with pale stools and dark urine

4. Absolute constipation (no stool or flatus for 24+ hours)

5. Pregnancy in any woman of reproductive age with abdominal pain

6. Unexplained weight loss with changing bowel habit (colorectal cancer)

7. Painless jaundice (pancreatic cancer until proven otherwise)

8. Sudden onset severe pain disproportionate to findings (mesenteric ischaemia)

Practising Under Exam Conditions

The biggest challenge in PLAB 2 is time management. Here's how to practise effectively:

1. Use a timer religiously — 8 minutes for history, then 2 minutes for summary and examiner questions

2. Practise with simulated patients — real people, not just reading scenarios

3. Record yourself — listen for filler words, awkward pauses, and missed red flags

4. Build a mental template — internalise the structure so it becomes automatic

5. Practise the pivot — smoothly transitioning from open questions to focused enquiry

AI-Assisted Practice

AI patient simulators can help you build fluency in the SOCRATES framework and associated symptom screening. They're particularly useful for:

• Repetitive practice without needing a study partner

• Receiving instant feedback on missed questions

• Building confidence in asking sensitive questions

However, remember that AI practice complements but doesn't replace human simulation. The nuances of patient body language, unexpected answers, and the pressure of a real examiner watching are elements that only live practice can replicate.

Final Checklist Before You Walk In

• ✅ Do I have my SOCRATES framework memorised?

• ✅ Can I screen associated symptoms in under 2 minutes?

• ✅ Do I routinely ask about pregnancy in female patients?

• ✅ Am I confident in identifying red flags for each scenario?

• ✅ Can I deliver a clear summary, differential, and safety-netting plan?

• ✅ Do I always ask ICE before closing?

• ✅ Can I manage the 8-minute clock without rushing?

Conclusion

Abdominal pain in PLAB 2 is not about knowing every rare diagnosis — it's about demonstrating a safe, systematic, and patient-centred approach. The examiners want to see that you can identify the unwell patient, differentiate between common causes, and communicate clearly. Master the framework, practise under time pressure, and never forget the red flags. With this structure internalised, you'll walk into any abdominal pain station with confidence.

Remember: Every patient with abdominal pain is a potential surgical emergency until proven otherwise. Your history is the first — and sometimes most important — step in keeping them safe.