Cortical subarachnoid hemorrhage (cSAH) — thunderclap vs focal symptoms, CT/MRI clues, and workup (Advanced)
Advanced course: bleeding on the brain surface (cortical SAH) can present with sudden headache or focal deficits. Learn how CT/MRI detect it, why cause-finding matters, and how it differs from aneurysmal SAH patterns.
Educational only
Educational only — not medical advice.
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If a patient develops new or worsening stroke symptoms, reduced consciousness, seizure, severe headache, airway/swallowing danger, or unstable vital signs, activate emergency response and follow local stroke escalation protocols.
Key takeaways
- Explain what cortical SAH is (surface bleeding)
- Recognize symptom patterns and why it’s an emergency
- Explain CT vs MRI roles in detecting small surface blood
- Know why clinicians look for causes and what imaging tests may follow
Why this matters
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Clinical frame
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Core clinical idea
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Assessment and workup
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Clinical reasoning pathway
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Management and team actions
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Common pitfalls
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Patient-safe explanation
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Escalation and safety signals
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Applied case
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Clinical scenario
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Common misconceptions
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Reflect
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Key takeaways
- Understand what cortical SAH is (surface bleeding)
- Advanced stroke care requires reconciling the clinical syndrome with timing, imaging, medication risk, patient context, and local pathway capacity.
- A safe plan names escalation thresholds, responsible clinicians, patient-facing instructions, and the next step if results or symptoms change.
Practice check
What you’ll practice
These questions are untimed. After you answer all of them, you’ll see your score and a clear next lesson or reference step.
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References
- Tier 1American Heart Association/American Stroke Association20222022 Guideline for the Management of Patients With Spontaneous Intracerebral Hemorrhage
- Tier 1American Heart Association/American Stroke Association20232023 Guideline for the Management of Patients With Aneurysmal Subarachnoid Hemorrhage
- Tier 2RadiologyInfo.org2025CT Angiography of the Head
- Tier 2RadiologyInfo.org2025Magnetic Resonance Imaging (MRI) - Head