PubMed · 15139725
Diagnosing acute headache.
Abstract
Acute onset headache is common. Most such patients do not have a sinister underlying cause, but some do. The key to deciding who requires investigation and who does not lies in the history. All patients presenting with headache maximal immediately or within a few minutes and lasting longer than an hour, require investigations (computed tomography brain scan +/- lumbar puncture) to exclude subarachnoid haemorrhage.
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Richard Davenport. Diagnosing acute headache.. https://doi.org/10.7861/clinmedicine.4-2-108
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