Clinical signs suggestive of an alternative diagnosis to migraine include
| • Altered conscious level |
| • Inappropriate behaviour (especially if recent onset) |
| • Increasing head circumference, sun setting eyes, and prominent scalp veins |
| • Papilloedema |
| • New or worsening squint |
| • Hypertension with or without bradycardia |
| • Cranial nerve palsies or motor deficits |
| • Cerebellar signs |
| • Hepatosplenomegaly |