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Thunderclap headache: an approach to a neurologic emergency
Manjit S Matharu1, Todd J Schwedt, David W Dodick
1Headache Group, Institute of Neurology, Queen Square, London WC1N 3BG, UK. m.matharu@uclmail.net
Current Neurology and Neuroscience Reports
|February 28, 2007
Summary
Thunderclap headache (TCH) is a sudden, severe headache that requires prompt diagnosis. This review covers TCH causes, reversible cerebral vasoconstriction syndrome, and primary TCH diagnosis and evaluation.
Area of Science:
- Neurology
- Emergency Medicine
- Neuroimaging
Background:
- Thunderclap headache (TCH) presents as an instantaneous, severe headache.
- Prompt recognition is crucial due to potential life-threatening causes like subarachnoid hemorrhage and stroke.
- Reversible cerebral vasoconstriction syndrome (RCVS) is a key differential diagnosis.
Purpose of the Study:
- To review the differential diagnosis of TCH.
- To outline diagnostic criteria for primary TCH.
- To discuss the pathophysiology and diagnostic evaluation of TCH.
Main Methods:
- Literature review of TCH and related conditions.
- Analysis of diagnostic criteria for primary TCH.
- Discussion of pathophysiologic hypotheses for TCH.
Main Results:
- TCH can stem from diverse serious neurological conditions.
- RCVS is characterized by cerebral vasoconstriction and normal cerebrospinal fluid.
- Primary TCH is diagnosed when no underlying cause is found.
Conclusions:
- Accurate TCH diagnosis is vital for identifying serious underlying pathologies.
- Understanding RCVS and primary TCH aids in appropriate patient management.
- A systematic diagnostic approach is essential for patients presenting with TCH.
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