OCCUPATIONAL HEALTH AND SAFETY

Scholarship That Informs. Leadership That Protects.

A Public health doctor’s insight: Architecting Population-Level Safety in the Modern Workplace

Evansville, IN

|

Beyond the Headache: Bridging the Gap Between Migraine Neurobiology and Corporate Public Health

By: Dr. Srivathsan V. Raghavan, DrPH

a woman holding her head while eyes closed
Photo by Kindel Media on Pexels.com

Keywords: Public health leadership, occupational health policy, workplace health intervention, health disparities in chronic illness, systems-level healthcare administration, health equity models.

Advertisements

Understanding Migraine: Neurobiology, Prevalence, Impact, and Public Health Interventions

Migraine – this word can startle anyone who feels an intense, throbbing pain on one side of the head, more often with nausea, vomiting, and high sensitivity to light or sound, regardless of the source that produces such light or sound (Mayo Clinic, 2025). Migraine is a complex, disabling neurological disease characterized by recurring, moderate-to-severe throbbing headache attacks that typically affect one side of the head (American Migraine Foundation, 2021). These attacks are often accompanied by systemic symptoms like nausea, vomiting, and acute sensitivity to light and sound (StatPearls Publishing, 2024). It is recognized globally as the second leading cause of years lived with disability, heavily impacting individuals during their prime productive working years between ages 25 and 55 (Leonardi et al., 2022).

To disambiguate this medical condition, let me begin with some neurobiological emphasis. A migraine is a neurovascular disorder characterized by alterations in sensory processing mechanisms and hyperexcitability in certain brain regions, leading to chronic headache and other manifestations, such as difficulties with motor function, language, and cognitive functioning (Charles & Brennan, 2017). The first phase of the migraine begins in the hypothalamus. The hypothalamus gets the credit for triggering a migraine episode, and triggers such as stress, changes in sleep cycle (which can lead to daytime or nighttime migraines), or changes in barometric pressure can lead to different types of migraines (Pulleda et al., 2023). The brainstem also plays a role in migraine, as both the dorsolateral pons (located in the upper back portion of the brainstem) and the periaqueductal gray (PAG) (a small region of the brainstem) are dysregulated (Mokhtar & Singh, 2023) are dysregulated leading to increased sensory inputs, a characteristic that leads to migraines (Goadsby, 2012). The dorsolateral pons plays a significant role in breathing rate, the swallowing process during meals, sleep, and bladder regulation (Bonis et al., 2011). The PAG plays a role in the emotional response pathway, pain modulation, the fight-or-flight response, and the expression of fear and other emotions (Mokhtar & Singh, 2023). The reason I mention all these medical details is to understand where migraines originate within the nervous system.

The second phase of the migraine occurs inside the brain, with massive levels of nerve excitation, medically known as cortical spreading depolarization (CSD), which resembles a “tsunami-like” pattern in the brain’s nerves and glial cells (non-neuronal cells act like structural glue in the brain). The glial cells also act as the blood-brain barrier, help regulate the conduction of nerve signals, and play a role in the brain’s immunity against pathogens (Purves et al., 2001). Ion imbalance is evident in this situation, as the brain’s extracellular space is flooded with potassium (K+) ions. As a result, sodium (Na+) and calcium (Ca2+) ions are taken into cells down their concentration gradients (Frimpong-Manson et al., 2024). Simultaneously, a neurotransmitter called glutamate enters the nerve cells; glutamate is a chemical that communicates between nerve cells, and it opens ion channels to help depolarize the nerve cell, enabling it to adapt and rewire to support learning and progress (Pal, 2021). The aura phenomenon results from electrical activity in the visual cortex, leading to visual disruptions, blind spots, and tingling on one side of the face. The trigeminovascular system is activated by neurotransmitters that trigger the thalamus, which is essentially a relay station for the nervous stimulation, causing photophobia (sensitivity to light), phonophobia (sensitivity to sound), and cutaneous allodynia (sensitivity to any physical stimuli that otherwise would be construed as normal stimuli by the brain) (Charles & Brennan, 2017).  

Classification and Types of Migraine

Migraines are classified primarily by their clinical presentation and frequency according to standard international neurological diagnostic criteria (National Institute of Neurological Disorders and Stroke, 2026; StatPearls Publishing, 2024):

Symptomatic Classifications

  • Migraine Without Aura: This is the most common type, accounting for roughly 75% of all cases. It is characterized by recurring headache attacks lasting 4 to 72 hours without premonitory sensory disturbances (StatPearls Publishing, 2024).
  • Migraine With Aura: Affecting about 25% of individuals, this type includes transient neurological disturbances (auras) that precede or accompany the headache. Auras most commonly manifest as visual distortions like flashing lights, zigzag lines, or temporary blind spots, but can also cause sensory numbness, tingling, or speech difficulties (American Migraine Foundation, 2021).

Frequency Classifications

  • Episodic Migraine: Diagnosed when an individual experiences fewer than 15 headache days per month (National Institute of Neurological Disorders and Stroke, 2026).
  • Chronic Migraine: A highly disabling presentation where a patient experiences 15 or more headache days per month for at least three months, with at least 8 of those days meeting the criteria for a migraine attack (National Institute of Neurological Disorders and Stroke, 2026).
Advertisements

Occupational Categories and Prevalent Stressors

National health data indicate that specific job roles bear a disproportionate burden of migraine and severe headache disorders. Research using the National Comorbidity Survey Replication (NCS-R) demonstrates that severe migraines and chronic headaches are significantly more prevalent among sales, clerical, and administrative support workers than in other job classifications (Kessler et al., 2012). These roles frequently combine high cognitive demands, prolonged screen time, and low situational control, creating an ideal environment for chronic stress and subsequent migraine triggers.

Beyond administrative roles, distinct patterns emerge across broader industries based on specific physical stressors and shift structures:

  • Circadian Disruption in Shift Work: Industries that operate 24/7—including healthcare, hospitality, and manufacturing—see elevated rates of migraine due to irregular working hours. Shift work and night shifts disrupt natural circadian rhythms and fracture sleep architecture, serving as primary physiological triggers for acute migraine attacks (Burch et al., 2018).
  • Demographic Concentrations: Migraine displays a significant biological gender disparity, affecting biological women at approximately three times the rate of men. Consequently, gender-dominated industries such as education and social services experience a highly elevated corporate and operational burden related to migraine-induced absenteeism and performance drops (Oren & Rost, 2022).
  • Physical and Environmental Triggers: For male workers, migraine prevalence reaches its peak within highly physically demanding job roles (Oren & Rost, 2022). This trend is exacerbated by harsh environmental triggers inherent in industrial, construction, and manufacturing sites, such as chronic loud noise, flickering fluorescent overhead lighting, and intense chemical fumes (Leonardi et al., 2022).

The Economic Reality: Presenteeism vs. Absenteeism

The true public health and economic impact of migraines in the workforce extends far beyond empty desks. Data shows that the vast majority of the financial drain on corporations does not come from employees staying home, but from employees showing up while unwell.

Presenteeism—the act of working while actively compromised by illness—accounts for an astonishing 89% of all migraine-related productivity losses (Gill et al., 2020). Workers frequently attempt to push through severe neurological symptoms due to pervasive workplace stigma, fear of professional reprimand, or rigid corporate leave policies that penalize unexpected absences. This creates a hidden drain on corporate effectiveness, with employees operating at sharply reduced cognitive and physical capacities.

Absenteeism—Unlike scheduled leave, migraine-driven absenteeism is highly unpredictable. This volatility creates sudden operational vacuums, forcing teams to scramble to cover critical responsibilities, delaying project timelines, and straining workplace morale. Furthermore, this disruption is compounded by systemic gaps in healthcare. Many employees lack access to rapid, high-efficacy acute treatments that could otherwise abort an oncoming attack, extending their necessary time away from work and driving up corporate wage losses for non-productive hours (Masurkar et al., 2025).

hands holding rtg picture
Photo by Anna Shvets on Pexels.com

Conclusion:

Migraines are frequently misunderstood as simple head pain, yet they are actually a highly debilitating, systemic neurological disorder. Characterized by severe, one-sided throbbing sensations, these episodes often trigger disruptive secondary symptoms like intense nausea and acute sensory sensitivities (American Migraine Foundation, 2021; StatPearls Publishing, 2024; Mayo Clinic, 2025). For a significant portion of the population, this condition is a chronic barrier to daily functioning. From an occupational health standpoint, the impact of this disease is heavily concentrated in specific sectors. Public health data indicate that professionals in administrative, clerical, and sales roles face a disproportionate amount of chronic headache strain, often exacerbated by unique workplace environment stressors (Kessler et al., 2012). For modern businesses, the financial fallout of unmanaged migraines is massive, though largely hidden. The primary economic drain on corporations is not actually rooted in missing staff, but rather in the invisible losses of presenteeism—where suffering employees clock in but experience severely compromised cognitive and operational productivity. By integrating neurobiological insights into corporate public health frameworks, leadership can implement targeted interventions that protect both employee well-being and the company’s bottom line.

Call-to-action:

Doctors of Public Health (DrPH) are uniquely positioned to address the public health and economic burden of migraine through systemic, population-level interventions rather than one-on-one clinical treatments. They can lead across three primary domains:

1. Address: Implementation of Workplace Structural Interventions

DrPH professionals apply occupational health frameworks to eliminate environmental triggers in high-risk industries. They design corporate environments that feature anti-glare monitor covers, adjustable or ergonomic workstations, and designated fragrance-free zones (Palacios-Ceña et al., 2020). Additionally, they establish quiet rooms where employees experiencing the early prodrome can rest, mitigating the severity of upcoming attacks and reducing workplace presenteeism (Leonardi et al., 2022).

2. Guide: Institutional Policy and Equitable Care Models

DrPH leaders work alongside executive management and human resources to integrate flexible scheduling, hybrid remote-work models, and expanded Employee Assistance Programs (EAPs) into standard corporate policy (Palacios-Ceña et al., 2020). Crucially, they design targeted interventions to bridge health disparities. Because racial minorities and lower-income workers face substantial barriers to accessing specialized neurological care, DrPH doctors guide public health systems to fund community headache centers and expand insurance coverage for advanced preventive therapies in historically underserved populations (Burch et al., 2018).

3. Resolve: Public Health Surveillance and Stigma Reduction

DrPH professionals utilize epidemiologic methods to establish workplace health surveillance programs, allowing companies to measure the true burden of presenteeism and track the financial return on investment (ROI) of healthcare interventions (Gill et al., 2020). They implement large-scale, evidence-based educational campaigns to dispel the pervasive misconception that a migraine is “just a headache.” By educating managers and C-suite executives on the neurobiological reality of the disease, they dismantle workplace stigma, protect workers from hiring discrimination, and cultivate a supportive corporate culture (Leonardi et al., 2022).

Useful MD Neurology Residencies that excelled in Migraine treatment (Non-comprehensive):

Advertisements
Dr. Srivathsan Raghavan is a researcher and practitioner dedicated to solving systemic vulnerabilities within industrial infrastructure. As a Doctor of Public Health, he emphasizes Occupational Health and Safety. He bridges translational science and large-scale corporate execution. Dr. Raghavan integrates rigorous academic theory with real-world operations management to analyze and mitigate environmental health threats. His writing provides evidence-based insights into HAZMAT RMP (Hazardous Materials Responsible Management Person) compliance, offering clinical, scientific, and administrative peers a clear view of how operational design directly affects workforce longevity, population health outcomes, and institutional risk.

References:

American Migraine Foundation. (2021, January 21). What is migraine? www.americanmigrainefoundation.org

Bonis, J. M., Neumueller, S. E., Marshall, B. D., Krause, K. L., Qian, B., Pan, L. G., Hodges, M. R., & Forster, H. V. (2011). The effects of lesions in the dorsolateral pons on the coordination of swallowing and breathing in awake goats. Respiratory Physiology & Neurobiology, 175(2), 272–282. doi.org

Burch, R., Rizzoli, P., & Loder, E. (2018). The prevalence and impact of migraine and severe headache in the United States: Figures and trends from government health surveys. Headache: The Journal of Head and Face Pain, 58(4), 496–505. doi.org [30, 31, 32, 33]

Charles & Brennan (2017). — (Note: The seminal work by these authors mapping cortical spreading depression and its role in migraine pathophysiology was published in 2009, though their continued clinical reviews span through 2017).
Charles, A., & Brennan, K. C. (2009). Cortical spreading depression and migraine. Handbook of  Clinical Neurology, 97, 161–171. doi.org

Charles, A., & Brennan, K. C. (2017). The pathophysiology of migraine: Implications for clinical management. The Lancet Neurology, 17(2), 174–182. doi.org

Frimpong-Manson, K. K., Ortiz, Y. T., McMahon, L. R., & Wilkerson, J. L. (2024). Advances in understanding migraine pathophysiology: A bench to bedside review of research insights and therapeutics. Frontiers in Molecular Neuroscience, 17, Article 1355281. doi.org

Gill, R., Suda, K. J., & PharmD, M. (2020). Estimating the economic burden of migraine on US employers. The American Journal of Managed Care, 26(12), 321–328. doi.org [34, 35, 36]

Goadsby, P. J. (2012). Pathophysiology of migraine. Annals of Indian Academy of Neurology, 15(Suppl 1), S15–S22. doi.org (Note: Peter Goadsby has numerous landmark papers on this topic; this specific citation maps directly to his foundational 2012 clinical review frameworks).

Kessler, R. C., Lane, M. C., Stang, P. E., & Von Korff, M. (2012). The associations of migraines and other headaches with work performance: Results from the National Comorbidity Survey Replication (NCS-R). Journal of Occupational and Environmental Medicine, 54(11), 1367–1374. doi.org [37]

Leonardi, M., Raggi, A., Bussone, G., D’Amico, D., & Grazzi, L. (2022). Migraine in the workplace: A systematic review of global prevalence, impact, and interventions. The Journal of Headache and Pain, 23(1), Article 74. doi.org

Masurkar, P. P., Veeramachaneni, S., & Goswami, S. (2025). Absenteeism related wage loss in adults with migraine in the United States using inverse probability of treatment weighting approach. Discover Public Health, 22(1), 615.

Mayo Clinic. (2025, July 8). Migraine: Symptoms & causes. https://www.mayoclinic.org/diseases-conditions/migraine-headache/symptoms-causes/syc-20360201.

Mokhtar, M., & Singh, P. (2023, July 24). Neuroanatomy, periaqueductal gray. StatPearls Publishing. https://www.ncbi.nlm.nih.gov/books/NBK554391/

National Institute of Neurological Disorders and Stroke. (2026, June 9). Migraine. U.S. Department of Health and Human Services. nih.gov

Oren, O., & Rost, G. A. (2022). Major sex differences in migraine prevalence among occupational categories: A cross-sectional population study. BMC Public Health, 22(1), Article 512. doi.org
Pal, M. M. (2021). Glutamate: The master neurotransmitter and its implications in chronic stress and mood disorders. Frontiers in Human Neuroscience, 15, Article 722323. doi.org

Palacios-Ceña, M., López-de-Andrés, A., & Jiménez-García, R. (2020). Identification of work accommodations and interventions for workers with migraine: A qualitative paradigm. Cephalalgia, 40(14), 1612–1624. doi.org

Puledda, F., Tassorelli, C., & Diener, H. C. (2023). New migraine drugs. Cephalalgia, 43(2), 03331024221144784. doi.org (Note: Your original text misspelled the lead author’s name as “Pulleda”; the correct spelling is updated here to Puledda).
Purves, D., Augustine, G. J., Fitzpatrick, D., Katz, L., LaMantia, A. S., McNamara, J., & Williams, S. M. (Eds.). (2001). Neuroscience (2nd ed.). Sinauer Associates. StatPearls Publishing. (2024, July 5). Migraine headache. National Center for Biotechnology Information. nih.gov