Independent NAC OSCE preparation by BoardQBank
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Adult medicine — complete topic guide

Headache, seizure, stroke and weakness

Turn this presentation into an 11-minute OSCE performance: focused assessment, prioritized differential, targeted examination and investigations, immediate management, communication, disposition and safety-netting.

What you must demonstrate

  • Focused history with relevant negatives
  • Targeted cardiovascular, respiratory, abdominal and neurologic examination
  • Prioritized differential diagnosis
  • Initial investigations and interpretation
  • Immediate stabilization plus disposition
Do not miss: Acute ischemic stroke · Intracranial hemorrhage · Hypoglycemia · Seizure/Todd paresis · Time-critical reperfusion delay

11-minute performance map

0:00–0:45

1. Opening and immediate safety

Introduce yourself, confirm identity, explain the task, obtain consent and identify instability before routine questioning.

0:45–4:30

2. Focused assessment

Clarify onset, progression, severity, associated features, discriminating positives/negatives and the most relevant background risks.

4:30–6:30

3. Targeted examination

Perform only the examination maneuvers needed to assess severity, confirm localization and discriminate the leading diagnoses.

6:30–7:30

4. Synthesize

Give a one-sentence summary, leading diagnosis and two to four prioritized alternatives including the dangerous diagnosis you cannot miss.

7:30–8:40

5. Investigations

Choose tests that answer a specific diagnostic or safety question; state urgent tests first.

8:40–10:15

6. Immediate management

Treat instability, begin syndrome-specific care, consult early when needed and define disposition.

10:15–11:00

7. Communication and safety net

Explain the plan, check understanding, address concerns and state exact deterioration/return criteria.

Focused history prompts

Define the presentation

  • Onset, chronology, triggers and progression.
  • Severity and effect on function.
  • Associated symptoms that support the leading diagnosis.
  • Relevant negatives that reduce dangerous alternatives.

Risk context

  • Relevant past medical/surgical/obstetric/psychiatric history.
  • Medications, allergies and adherence.
  • Family, social, substance, travel/exposure or safeguarding factors as applicable.
  • Patient ideas, concerns, expectations and goals.

Dangerous alternatives to prioritize

  1. Acute ischemic stroke
  2. Intracranial hemorrhage
  3. Hypoglycemia
  4. Seizure/Todd paresis
  5. Time-critical reperfusion delay

Targeted investigations

Focused bedside observations and ECG/point-of-care tests when indicated

CBC, electrolytes/renal function, glucose and targeted biochemical tests

Disease-specific imaging or physiologic testing based on the leading differential

Microbiology/cultures when infection is plausible and results will change management

Immediate management and disposition

  1. Stabilize ABC problems first and treat immediately reversible threats.
  2. Start evidence-based initial therapy matched to severity and contraindications.
  3. Consult the appropriate service early when the diagnosis is time-sensitive or high-risk.
  4. State disposition, reassessment plan, follow-up and explicit return precautions.
High-yield closing sentence: “I would reassess after the initial intervention, escalate if there is deterioration, explain the plan in plain language, confirm understanding and give specific safety-net instructions.”

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