1. International Headache Society Classification Subcommittee (2004) The international classification of headache disorders, second edition. Cephalalgia 24(Suppl 1):1–160
2. Matharu MS, Goadsby PJ (2008) Trigeminal autonomic cephalalgias: diagnosis and management. In: Silberstein SD, Lipton RB, Dodick DW (eds) Wolff’s headache and other head pain, 8th edn. Oxford University Press, Oxford, pp 379–430
3. May A, Leone M, Afra J et al (2006) EFNS guidelines on the treatment of cluster headache and other trigeminal-autonomic cephalalgias. Eur J Neurol 13:1066–1077, 16987158, 10.1111/j.1468-1331.2006.01566.x, 1:STN:280:DC%2BD28rmt1SgsQ%3D%3D
4. British Association for the Study of Headache (2007) Guidelines for all healthcare professionals in the diagnosis and management of migraine, tension-type, cluster and medication-overuse headache. BASH, London, pp 40–44
5. Cohen AS, Matharu MS, Goadsby PJ (2006) Short-lasting unilateral neuralgiform headache attacks with conjunctival injection and tearing (SUNCT) or cranial autonomic features (SUNA)—a prospective clinical study of SUNCT and SUNA. Brain 129:2746–2760, 16905753, 10.1093/brain/awl202