Related Experiment Video
Updated: Jul 4, 2026

Pre-Chiasmatic, Single Injection of Autologous Blood to Induce Experimental Subarachnoid Hemorrhage in a Rat Model
Published on: June 18, 2021
Post-traumatic short-lasting unilateral headache with cranial autonomic symptoms (SUNA)
S Jacob1, Ar Saha, Ya Rajabally
1Department of Neurology, University Hospitals of Leicester, Leicester General Hospital, Leicester, UK.
Abstract:
Short-lasting unilateral neuralgiform headache attacks with conjunctival injection and tearing (SUNCT) syndrome is a rare headache syndrome classified among the trigeminal autonomic cephalalgias. It is usually idiopathic, although infrequent secondary forms have been described. Recently the term short-lasting unilateral headache with cranial autonomic symptoms (SUNA) has been defined by the International Headache Society (ICHD-2) as similar to SUNCT with less prominent or absent conjunctival injection and lacrimation. We report two patients with paroxysmal orbito-fronto-temporal pains, phenotypically suggesting SUNA, occurring after traumatic head injury.
Related Concept Videos
Transient Ischemic Attack l: Introduction
Traumatic Brain Injury l: Introduction
Increased Intracranial Pressure ll: Pathophysiology
Increased Intracranial Pressure l: Introduction
Post-traumatic Stress Disorder
Symptoms and Behavioral Manifestations
A spectrum of distressing symptoms characterizes PTSD. Recurrent flashbacks, where individuals involuntarily relive traumatic events, are a...
Equilibrium and Balance
