Mnemonic for Headache ‘red flags’
SNOOP
- Systemic symptoms or illness e.g. fever, vomiting, stiff neck, photophobia, pregnancy, cancer, immunocompromised
- Neurological signs e.g. altered mental state, focal neurological signs, seizures, papilledema
- Onset recent or sudden (especially under 40 years old)
- Other associated symptoms e.g. associated with trauma, wakened during sleep, worsened by Valsalva maneuvers
- Previous headaches that have been different e.g. headaches becoming more frequent or character changing
These symptoms may require neuroimaging – CT or MRI.