J Headache Pain
December 2024
Introduction: It is largely accepted that migraine with aura (MA) is caused by cortical spreading depression (CSD) and that migraine without aura (MO) is not. This is mostly based on old studies of regional cerebral blood flow (rCBF) and studies of vascular responses. These studies are partly forgotten today and may, therefore, be worthwhile reviewing.
View Article and Find Full Text PDFBackground And Aim: Explicit diagnostic criteria for transient ischemic attack (TIA) (EDCT) have been recently proposed based on the assumption, that a migraine aura-like symptom is not typical for a TIA. However, migraine-like symptoms have been unexpectedly frequent in patients with confirmed ischemic stroke. This cross-sectional study aimed to field-test the EDCT to distinguish transient neurological symptoms caused by cerebral infarction from those caused by migraine aura.
View Article and Find Full Text PDFCephalalgia
December 2024
There is a multitude of scientific papers and guideline papers on the methodology of drug trials in migraine. Here, we try to condense this into a single paper and to make proposals for future consideration. Literature known by the authors and from reference lists of relevant publications was used for the history.
View Article and Find Full Text PDFObjective: To determine the association between human leukocyte antigen (HLA) alleles and migraine, migraine subtypes, and sex-specific factors.
Background: It has long been hypothesized that inflammation contributes to migraine pathophysiology. This study examined the association between migraine and alleles in the HLA system, a key player in immune response and genetic diversity.
Background: Migraine research has highlighted the pivotal role of nitric oxide (NO) in migraine pathophysiology. Nitric oxide donors such as glyceryl trinitrate (GTN) induce migraine attacks in humans, whereas spontaneous migraine attacks can be aborted by inhibiting NO production. The present study aimed to investigate how GTN triggers migraine through its three nitric oxide synthase (NOS) isoforms (neuronal NOS (nNOS), endothelial NOS (eNOS) and inducible NOS (iNOS)) via a suspected feed-forward phenomenon.
View Article and Find Full Text PDFBackground: Pituitary adenylate cyclase-activating peptide (PACAP) is a neuropeptide pivotal in migraine pathophysiology and is considered a promising new migraine drug target. Although intravenous PACAP triggers migraine attacks and a recent phase II trial with a PACAP-inhibiting antibody showed efficacy in migraine prevention, targeting the PACAP receptor PAC1 alone has been unsuccessful. The present study investigated the role of three PACAP receptors (PAC1, VPAC1 and VPAC2) in inducing migraine-relevant hypersensitivity in mice.
View Article and Find Full Text PDFA recent publication in JCBFM, "Static autoregulation in humans" gives rise to critical comments. Autoregulation of cerebral blood flow implies that flow is rather constant within a certain blood pressure (BP) range with a lower and an upper pressure limit. The physiology at the two limits is very different, making comparison of the brain's vulnerability at the limits questionable.
View Article and Find Full Text PDFIntroduction: The development of several experimental migraine provocation models has significantly contributed to an understanding of the signaling mechanisms of migraine. The early history of this development and a view to the future are presented as viewed by the inventor of the models.
Methods: Extensive knowledge of the literature was supplemented by scrutiny of reference lists.
Headache disorders are the most common disorders of the nervous system. The lifetime prevalence of headache disorders show that some individuals never experience headache. The etiology of complete freedom from headache is not known.
View Article and Find Full Text PDFCephalalgia
January 2024
Purpose: The International Classification of Headache Disorders (ICHD) is universally accepted and forms the basis of headache management and clinical, experimental and pharmacological headache research. The present review summarizes the history of the three different editions of the classification, concentrating on aspects of general interest that are still valid today.
Methods: The article is based on the memory of the chairperson of three editions of the International Classification and on his notes in the work copies and published scientific classification studies.
Background: The distinction between a pre-existing primary headache and a secondary headache at the onset of a disorder is important and has not been taken into account in the International Classification of Headache Disorders-3. This study aimed to improve the general diagnostic criteria for secondary headaches using results of our previous studies.
Materials And Methods: We analyzed characteristics of headaches including their changes in intensity, duration, frequency, localization and side, development of new accompanying symptoms, and therapeutic response at the onset of transient ischemic attacks (TIA) (n = 120, mean age 56.
Background: The European Academy of Neurology (EAN) is a member of the European Brain Council (EBC), a coalition of neurologists, psychiatrists, neurosurgeons, neuroscientists, patient organizations and industry with an interest in the brain and its diseases. It was founded by the present author. Here, its formation, early history and the results of its advocacy are described.
View Article and Find Full Text PDFBackground: The current , 3rd edition (ICHD-3) diagnostic criteria for cardiac cephalalgia were established according to previous case reports and the opinion of experts. We aimed to assess the ICHD-3 diagnostic criteria for cardiac cephalalgia.
Methods: We conducted a series of cases study and evaluated these criteria in 54 patients with cardiac cephalalgia.
Background: Mechanisms for how environmental chemicals might influence pain has received little attention. Epidemiological studies suggest that environmental factors such as pollutants might play a role in migraine prevalence. Potential targets for pollutants are the transient receptor potential (TRP) channels ankyrin 1 (TRPA1) and vanilloid 1 (TRPV1), which on activation release pain-inducing neuropeptide calcitonin gene-related peptide (CGRP).
View Article and Find Full Text PDFMigrainous infarction (MI) is a rare disorder. The precise diagnostic criteria for this diagnosis have been available in the International Classification of Headache Disorders (ICHD) since 1988, but many cases do not fulfil these criteria. This paper describes a good example of MI and analyzes previously published case reports.
View Article and Find Full Text PDFMigraine is a common, polygenic disorder that is characterized by moderate to severe headache attacks. Migraine attacks are commonly treated with triptans, i.e.
View Article and Find Full Text PDFMigraine is one of the leading causes of disability worldwide, affecting work and social life. It has been estimated that sales of migraine medicines will reach 12.9 billion USD in 2027.
View Article and Find Full Text PDFMigraine is a highly disabling pain disorder with huge socioeconomic and personal costs. It is genetically heterogenous leading to variability in response to current treatments and frequent lack of response. Thus, new treatment strategies are needed.
View Article and Find Full Text PDFObjectives: Allele counts of sequence variants obtained by whole genome sequencing (WGS) often play a central role in interpreting the results of genetic and genomic research. However, such variant counts are not readily available for individuals in the Danish population. Here, we present a dataset with allele counts for sequence variants (single nucleotide variants (SNVs) and indels) identified from WGS of 8,671 (5,418 females) individuals from the Danish population.
View Article and Find Full Text PDFImportance: There is a need for better recognition and more extensive research into menstrual migraine (MM) in the general population, and a revision of the diagnostic criteria for MM is warranted to move the field forward. Increased understanding of MM is crucial for improving clinical care, diagnosis, and therapy for MM.
Objectives: To assess the clinical characteristics of MM, including severity and treatment response, and to propose new diagnostic criteria for pure MM and menstrually related migraine.