Active clinical trials for "Migraine Disorders"

Migraine is a chronic neurological disease characterized by recurrent moderate to severe headaches often in association with a number of autonomic nervous system symptoms. Migraines are believed to be due to a mixture of environmental and genetic factors. About two-thirds of cases run in families. Changing hormone levels may also play a role, as migraines affect slightly more boys than girls before puberty, but about two to three times more women than men after puberty. The risk of migraines usually decreases during pregnancy. The exact mechanisms of migraine are not known. It is, however, believed to be a neurovascular disorder. The primary theory is related to increased excitability of the cerebral cortex and abnormal control of pain neurons in the trigeminal nucleus of the brainstem.

Migraine is a highly disabling disorder affecting 14% of the general population Worldwide and ranked as the 6th most debilitating disease worldwide by the WHO. One of the most fundamental questions of migraine, which remains to be elucidated, is the mechanism behind the generation of migraine attacks. The investigators will use calcitonin gene-related peptide (CGRP) and sildenafil as pharmacological triggers of migraine, combined with advanced neuroimaging techniques, to investigate the attack initiating pathophysiology. Both substances have previously been administered to healthy participants and migraine without aura patients, inducing headache and migraine-like-attacks. The investigators hope to contribute with novelty to the current understanding of the migraine pathophysiology and development of more efficient treatment of migraine.

This expanded access program is designed to make fremanezumab available to patients with EM or CM who have successfully completed (per protocol) Teva-sponsored Study TV48125-CNS-30051 or TV48125-CNS-30068 ("prior studies") until fremanezumab becomes commercially available in their country.

The purpose of this study is to develop a clinical decision rule for patients seen in the pediatric emergency department for possible intracranial pathology. This a prospective study evaluating patients presenting with headache and migraine. The study is observational and does not impact patient care.

Recently, radiomics combined with machine learning method has been widely used in clinical practice. Compared with traditional imaging studies that explore the underlying mechanisms, the machine learning method focuses on classification and prediction to propose personalized diagnosis and treatment strategies. However, these studies were based on thin-section research-quality brain MR imaging with section thickness of < 2 mm. Clinical, the usage of thick-section clinical setting instead of thin-section research setting is especially important to shorten the acquisition time to reduce the patient's suffering. Here investigators want to build multiparametric diagnostic model of migraineurs without aura using radiomics features extracted from thick-section clinical-quality brain MR images.

Description of modalities concerning the patient care of headaches sensible to indometacine.

The purpose of the study is to evaluate the prevalence of white matter lesions in Chinese migraineurs with and without right-to-left shunt. The aim is to study the relationship among right-to-left shunt, migraine and white matter lesions.

Do migrainous vertigo patients have more pathology in their vestibular system than migraine patients without vertigo? The aim of this study is to compare the vestibular system of migraine patients with and without vertigo in the symptom-free period by vestibular function tests, videonystagmography, vestibular evoked myogenic potentials, and subjective visual vertical.

The aim of this study is to define the sympathetic skin response of migraineurs in the facial area. This will be achieved by exposing healthy volunteers and migraine patients to various stress stimuli (pain, visual stimulation, auditory stimulation and a mathematical challenge), and recording sympathetic skin response in the facial area.

Brain white matter hyperintensities (WMHs) are prevalent in migraineurs, of which the mechanism is still unclear. The investigators aimed to test the spatial association between areas with reduced cerebrovascular reactivity (CVR) to hypercapnic stimuli and consequent development of WMHs.