The three types of clinical picture of attacks of SUNCT/SUNA.
Brain.2006 Oct;129(Pt 10):2746-60. Epub 2006 Aug 11.
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.