Which hemorrhage is associated with thunderclap headache and stiff neck due to aneurysm rupture?

Which hemorrhage is associated with thunderclap headache and stiff neck due to aneurysm rupture?

• A. Epidural
• B. Subdural
• C. Subarachnoid
• D. Intraparenchymal hemorrhage

Answer: (C)

A sudden thunderclap headache with neck stiffness is classic for blood leaking into the subarachnoid space from a ruptured intracranial aneurysm. When the aneurysm bursts, blood floods the subarachnoid space around the brain and spinal cord, irritating the meninges. That meningeal irritation produces the stiff neck, and the rapid, maximum-intensity onset describes the thunderclap headache. This pattern is most specific for subarachnoid hemorrhage, and imaging typically shows blood in the basal cisterns on CT, with xanthochromia on lumbar puncture if needed. Epidural hemorrhage usually follows head trauma and presents with a rapid decline after a possible brief lucid interval, not primarily meningeal irritation from blood in the subarachnoid space. Subdural hemorrhage results from torn bridging veins, often after minor trauma, with slower onset and a more variable symptom course. Intraparenchymal hemorrhage involves bleeding into brain tissue itself, often linked to hypertension or vascular malformations and typically presents with focal neurological deficits rather than the classic thunderclap with neck stiffness.

A sudden thunderclap headache with neck stiffness is classic for blood leaking into the subarachnoid space from a ruptured intracranial aneurysm. When the aneurysm bursts, blood floods the subarachnoid space around the brain and spinal cord, irritating the meninges. That meningeal irritation produces the stiff neck, and the rapid, maximum-intensity onset describes the thunderclap headache. This pattern is most specific for subarachnoid hemorrhage, and imaging typically shows blood in the basal cisterns on CT, with xanthochromia on lumbar puncture if needed.

Epidural hemorrhage usually follows head trauma and presents with a rapid decline after a possible brief lucid interval, not primarily meningeal irritation from blood in the subarachnoid space. Subdural hemorrhage results from torn bridging veins, often after minor trauma, with slower onset and a more variable symptom course. Intraparenchymal hemorrhage involves bleeding into brain tissue itself, often linked to hypertension or vascular malformations and typically presents with focal neurological deficits rather than the classic thunderclap with neck stiffness.