The aim of the present work was to analyze c-fos response within the trigeminal nucleus caudalis (TNC) of pinealectomized rats and animals that received intraperitoneal melatonin, after intracisternal infusion of capsaicin, used to induce intracranial trigeminovascular stimulation. Experimental
Post-traumatic headache (PTH) is a condition that frequently affects individuals after traumatic brain injury (TBI). Inflammation is one of the major causes of this disability. However, little is known about the trigger for, and endurance of, this painful process. Thus, the involvement of fibers
Intracranial headaches, including migraines, are mediated by nociceptive activation of the trigeminal nucleus caudalis (TNC), but the precise mechanisms are poorly understood. We previously demonstrated that selective blockage of spinal sigma-1 receptors (Sig-1R) produces a prominent antinociceptive
It has been suggested that treatment of cluster headache (CH) patients with topical capsaicin may desensitize sensory neurons by depleting the nerve terminals of substance P. We attempted to determine whether capsaicin is effective in aborting CH attacks. Patients in acute cluster were randomized to
Capsaicin, when repeatedly applied to the nasal mucosa of cluster headache patients, has been shown to prevent the occurrence of pain attacks. In order to investigate the mechanism of the drug's action, we evaluated the effect of repeated nasal application of capsaicin on the contents of sensory
Capsaicin application to human nasal mucosa was found to induce painful sensation, sneezing, and nasal secretion. All of these factors exhibit desensitization upon repeated applications. The acute effects induced by capsaicin (300 micrograms/100 microliters) application to the nasal mucosa were
Using a positron emission tomography (PET) study it was shown recently that in migraine without aura certain areas in the brain stem were activated during the headache state, but not in the headache free interval. It was suggested that this brain stem activation is inherent to the migraine attack
Preliminary studies have shown that repeated nasal applications of capsaicin prevented the occurrence of cluster headache attacks. The present study was designed to verify the difference in efficacy of treatment with nasal capsaicin, depending on the side of application. Fifty-two patients affected
Trigeminal neurogenic inflammation is one explanation for the development of vascular migraine. The triggers for this inflammation and pain are not well understood, but are probably vasoactive components acting on the blood vessel wall. Migraine-related inner ear symptoms like phonophobia, tinnitus,
Cluster headache is characterized by typical autonomic dysfunctions including facial and intracranial vascular disturbances. Both the trigeminal and the cranial parasympathetic systems may be involved in mediating these dysfunctions. An experimental model was developed in the rat to measure changes
BACKGROUND
The revised International Headache Society (IHS) criteria for cluster headache are: attacks of severe or very severe, strictly unilateral pain, which is orbital, supraorbital, or temporal pain, lasting 15-180 minutes and occurring from once every other day to eight times daily.
METHODS
We
Headaches can be of sinugenic origin even if this cause may not be suspected from the case history. Endoscopy of the lateral nasal wall with rigid cold light endoscopes in combination with polytomography or computed tomography usually will reveal the underlying causes hidden from the unaided eye,
Extracellular signal-regulated kinase (ERK) is known to be phosphorylated after exposure to noxious stimuli. In this study, we investigated the response in the dura mater to nociceptive stimulation, which is thought to be responsible for the pathogenesis of headaches, including migraines. We also
Cluster headache is a rare, severe, clinically well-characterized disorder that occurs in both episodic and chronic forms. The painful short-lived attacks occur unilaterally and are associated with signs and symptoms of autonomic involvement. They are difficult to treat, and reported prophylactic
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