SERIOUS HEADACHE WITH NORMAL CT HEAD

(click here for a list of differential diagnoses according to pathology)

(click here for a list of differential diagnoses according to abruptness of onset)

meningitis

encephalitis

subarachnoid haemorrhage (about 5% of cases)

iso-dense subdural haematoma (especially if bilateral)

posterior fossa lesions or bleeds

dural venous sinus thrombosis

misreported CT scan!

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