Migraine is a chronic neurological disorder associated with substantial disability and societal costs. Traditionally, research and clinical care have focused on the ictal phase, characterized by headache and accompanying symptoms. However, growing evidence suggests that a considerable portion of migraine-related disability occurs between attacks, known as the interictal burden (IIB). IIB encompasses a wide spectrum of cognitive, emotional, sensory, and functional impairments that persist during headache-free periods, including fatigue, allodynia, photophobia, cognitive dysfunction, anticipatory anxiety, and social withdrawal. These symptoms can markedly reduce quality of life, work productivity, and family functioning, even in individuals with infrequent attacks. In a descriptive survey of 506 migraine respondents, 67% experienced severe IIB. The effects of IIB extend beyond patients themselves, contributing to presenteeism in the workplace and imposing emotional and logistical strain within families. Several instruments, including the Migraine Interictal Burden Scale (MIBS-4), Migraine-Specific Quality of Life Questionnaire (MSQ v2.1), Headache Impact Test (HIT-6), and Migraine Disability Assessment (MIDAS), have been employed to assess different dimensions of IIB. Nonetheless, no single comprehensive and standardized tool fully captures the multidimensional nature of IIB. Recognizing and addressing IIB is essential for delivering holistic, patient-centered migraine care. Future research should focus on developing validated assessment instruments and incorporating IIB measures into clinical trials and routine practice to better understand and alleviate the hidden burden of migraine.
Purpose: Recent advances in imaging techniques have significantly enhanced the diagnosis of spontaneous intracranial hypotension (SIH). However, these developments have been reported mostly in Europe and the United States. This study aimed to evaluate the availability and utilization of diagnostic and treatment modalities for SIH in Asia, through a survey of regional headache specialists.
Methods A literature search was conducted using PubMed, and members of the Asian Regional Consortium for Headache were contacted. Participants completed a two-step survey evaluating the availability, accessibility, and frequency of SIH diagnostic and treatment methods in their countries and institutions. Descriptive statistics were used to analyze the data.
Results Twenty physicians from eight countries completed both rounds of the survey. Lumbar puncture, brain magnetic resonance imaging (MRI), and spinal MRI are widely available across Asia, but real-time imaging techniques—such as dynamic computed tomography myelography and digital subtraction myelography—that precisely localize cerebrospinal fluid leaks are less accessible. Blind or semi-targeted epidural blood patches (EBPs) are available at most centers, but are easily accessible in only about half of cases. Surgical interventions are rarely available.
Conclusion Most diagnostic methods for SIH are available in Asia, despite some regional disparities. The utilization of EBP and surgical interventions remains somewhat limited. This highlights the need for greater awareness and standardization of diagnostic methods in Asia.
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