🛑 Red Flags of Secondary Headaches

• SNOOP4 (American Headache Society, 2021) 🇺🇸

  • Systemic symptoms and signs

  • Neurologic symptoms or signs

  • Onset sudden

  • Older age at onset (>50 years)

  • Pattern change/progression

  • Precipitated by Valsalva maneuver

  • Positional aggravation

  • Papilledema

• Other versions

  • SNOOP10 (Neurology, 2019) 🇨🇦

🤯 Thunderclap Headache

• Definition

  • “A thunderclap headache is defined as a sudden onset headache reaching maximum intensity in <1 minute and lasting >5 minutes.” - Karsan & Goadsby (2023) 🇬🇧 [full paper]

• Imaging & CSF approach in the ED

  • Matharu, Schwedt, & Dodick (2007) 🌐 [full paper]

  • Ravishankar (2016) 🇮🇳 [full paper]

  • Long, Koyfman, & Long (2019) 🇺🇸 [full paper]