It has been reported that some patients have been misdiagnosed with Subarachnoid Hemorrhage, when in fact the correct diagnosis in their specific case was Migraine.
A migraine is a severe headache. Accompanying symptoms of migraines include visual phenomena such as shapes, bright spots, flashes of light, vision loss, pins and needles sensations, weakness or numbness, difficulty speaking, sensitivity to light, sound, smell and touches, nausea and vomiting. Migraines can be misdiagnosed as subarachnoid haemorrhage, meningitis, intracranial mass, cerebral haemorrhage, intracranial venous thrombosis, head injury and lymphocytic hypophysitis