In most cases, migraine symptoms can be divided into four stages: the prodrome, the aura, the headache, and the postdrome [17,18]. A comprehensive approach to diagnosing and treating migraine symptoms is essential at all stages of the condition [19,20,21,22]. This is because it is generally accepted that migraine symptoms negatively impact both a person’s day-to-day existence and their overall quality of life. There are no visual symptoms connected to a migraine without an aura. Aura-accompanied headaches have been linked to aberrant sensory processing in the brain, including thalamocortical dysrhythmia [23,24], according to some research. Inflammatory neuropeptides and neurotransmitters are released into the brain and bloodstream in response to a migraine episode, setting off a cascade of inflammatory reactions. Migraine sufferers may report worsening headaches as a result of this. Migraines and auras may have their origins in these changes [25,26]. They can either make it easier or more stimulating for the brain to process sensory data. Aberrant activity between the thalamus and the cortex, as might occur with thalamocortical dysrhythmia, is one mechanism underlying sensory hypersensitivity [27]. This is a mechanism underlying heightened sensitivities in the senses. When the suppression of incoming information that the cortex needs to process moves from primary to secondary cortices, visual features become perceptually available [28]. According to electrophysiological studies using instruments like the electroencephalograph (EEG) and the magnetoencephalogram (MEG), migraine attacks are associated with changes in brain activity patterns and excitability [29]. These alterations have been linked to decreased beta-wave activity and increased theta- and alpha-wave activity in some parts of the brain. Migraine-related changes in sensory pathways can be analyzed with noninvasive methods like visual evoked potentials (VEPs) and other types of sensory evoked potentials (SEPs) [30,31,32]. Patients suffering from migraines frequently exhibit these kinds of anomalies.

The cause of migraines has been the subject of numerous studies in recent years. According to studies done on animals, female hormones may be the cause of migraines, at least in part [33]. DNA methylation is just one example of the growing body of research suggesting an epigenetic role in migraine pathophysiology [34]. Although estrogen’s precise involvement in the onset of migraines is unclear [35], a careful evaluation of the data suggests that it plays a significant role. These studies highlight the need for thorough data analysis that accounts for the presence of biases and confounding variables in order to obtain an accurate depiction of migraine pathophysiology. Although they have been recorded during migraine attacks, the reliability of electroencephalograms (EEGs) and visual evoked potentials (VEPs) has not been demonstrated. A SCN1A carrier patient with a migraine in 2016 [36] demonstrated visual evoked potentials (VEPs), although this area still needs extensive investigation. The full range examined migraine can be diagnosed with the help of electroencephalography (EEG) and steady-state visual evoked potentials (VEPs). However, short-lived visual evoked potentials (VEPs) cannot be used for this purpose. However, a recent VEP experiment employing four different spatial frequencies looked into two visual circuits that overlap in migraine sufferers. More research into this area could help scientists figure out what sets off migraines, which would lead to more effective treatments. The S index was found to be correlated with allodynia severity (as judged by the Allodynia Symptoms Checklist, or ASC-12), both at the outset of the study and after three months of topiramate treatment. This was observed prior to and during the patient’s administration of topiramate for the study’s specified treatment period. According to the results of this investigation, the S index shows promise as a biomarker for both the migraine cycle and cortical sensitization. Migraines are thought to originate less from an issue with the blood vessels in the head and more from an issue with the brain’s ability to comprehend sensory information. This is a complex procedure that may require a great deal of effort and several years to perfect.