Which sign is most consistent with a hemorrhagic stroke?

• A. Gradual onset of weakness
• B. Nausea and vomiting without headache
• C. Thunderclap headache with rapid LOC decline
• D. Chest pain radiating to left arm

Answer: (C)

A sudden thunderclap headache with rapid loss of consciousness is the hallmark sign of a hemorrhagic stroke. When a cerebral vessel ruptures, blood floods the brain or the surrounding spaces, causing an abrupt spike in intracranial pressure and irritation of the meninges. This typically leads to an immediate and dramatic decline in mental status, sometimes into coma, and is described as the worst headache of life by many patients.

This presentation helps distinguish hemorrhagic stroke from other conditions. Ischemic strokes often present with sudden focal deficits (like weakness or speech trouble) but not the abrupt, severe headache with rapid LOC change. Nausea and vomiting without a headache is nonspecific and can occur with many conditions, and chest pain radiating to the left arm points to a cardiac event rather than a brain bleed. In suspected hemorrhagic stroke, focus on airway and rapid transport to a stroke center, with careful monitoring of neurologic status and vital signs.