Normal CT brain
Severe headache. History of migraine previously and on treatment. Predominantly occipital. No neurology.
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Normal intracranial appearances. No mass lesion, infarction, hemorrhage, hydrocephalus or extra-axial collection.
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The CT brain is normal. This is not unusual in headache and CT should really only be used for investigation in headache where there are red flags to suggest a cause that requires urgent treatment (most causes that require treatment will be seen on a CT and CT is ubiquitous, quick and available):
- acute onset (worst headache ever)
- focal neurology
- nausea and vomiting
- reduced conscious level