Hidradenitis suppurativa is a chronic inflammatory dermatosis characterized by painful, recurrent nodules, abscesses, and draining tunnels, known as sinus tracts, most commonly in the axillae, groin, and perineal regions. It arises from inflammation centered on the hair follicles in areas rich in apocrine glands, and it follows a relapsing-remitting course that can span decades. The disease is far from rare, affecting an estimated one percent or more of the population, yet it remains underdiagnosed and frequently mistaken for simple boils or infections. Beyond its physical toll, the condition is notorious for its impact on quality of life: lesions in sensitive body regions, malodorous drainage, scarring, and unpredictable flares contribute to social isolation, sexual dysfunction, and profound psychological distress. For years, clinicians have observed that patients with hidradenitis suppurativa suffer from depression, anxiety, and suicidality at rates that dwarf those seen in the general population and in many other chronic dermatologic diseases.

What distinguishes the new research letter by Rehman Basharat of the Renaissance School of Medicine at Stony Brook University and Javed Iqbal of Stony Brook’s Department of Neurobiology and Behavior is its deliberate reversal of the conventional causal arrow. Most prior investigations, including a widely cited 2020 systematic review and meta-analysis published in the Journal of the American Academy of Dermatology, examined depression, anxiety, and suicidality as outcomes of living with hidradenitis suppurativa. That meta-analysis confirmed strikingly elevated odds of psychiatric comorbidity among patients, cementing the skin-to-mind pathway in the literature. The Stony Brook team instead asked whether depression might come first—whether a diagnosis of depression increases the subsequent likelihood of developing hidradenitis suppurativa. By structuring the analysis as a retrospective cohort using real-world data, the investigators could track individuals over time and examine the temporal sequence between the psychiatric and dermatologic conditions, an approach that cross-sectional surveys simply cannot support.

The biologic plausibility of such a reverse pathway rests on a rapidly growing understanding of the immunology of depression itself. Far from being a purely neurochemical disorder, major depression is increasingly recognized to carry a systemic inflammatory signature. Landmark work, including the influential 2016 review by Andrew Miller and Charles Raison in Nature Reviews Immunology, has documented elevated circulating pro-inflammatory cytokines, increased acute-phase reactants, and altered immune cell activity in subsets of depressed patients. Cytokines such as interleukin-1 beta, interleukin-6, and tumor necrosis factor alpha can cross into or signal within the central nervous system, but their effects are by no means confined to the brain. These same molecular messengers are central drivers of cutaneous inflammation. In hidradenitis suppurativa specifically, the pathophysiology is understood to involve follicular occlusion followed by an intense, dysregulated immune response dominated by innate inflammatory pathways and a characteristic overexpression of tumor necrosis factor alpha, interleukin-17, and interleukin-23 in lesional skin. A 2024 narrative review in Skin Appendage Disorders meticulously mapped this cytokine-mediated molecular architecture of the disease, highlighting how TNF-alpha in particular orchestrates the chronic inflammatory cascade that destroys follicular structures and produces the fistulating lesions that define advanced disease.

The convergence of these two inflammatory profiles is what gives the new hypothesis its scientific traction. Depression is associated with elevated TNF-alpha and other cytokines; hidradenitis suppurativa is driven by the same mediators. If a state of chronic, low-grade systemic inflammation induced or maintained by depression were to lower the threshold for follicular inflammation, impair wound healing, or dysregulate the innate immune responses of the skin, then depressed individuals could plausibly face a heightened risk of developing manifest hidradenitis suppurativa. Behavioral and physiological factors common to depression may compound this immunologic pathway: sleep disruption, physical inactivity, smoking, obesity, poor diet, and altered hypothalamic-pituitary-adrenal axis activity are all more prevalent in depression and all have documented links to inflammatory skin disease severity. Cortisol dysregulation, in particular, is known to impair epidermal barrier function and dermal immune surveillance, mechanisms that have been studied extensively in the psychodermatology literature.

The Stony Brook authors are explicit that their work builds on earlier speculation in the field. A 2024 commentary in the journal Cutis raised exactly this possibility, arguing that depression could function as a potential contributing factor in hidradenitis suppurativa and highlighting racial gaps in how the association manifests, given the disease’s disproportionate burden on Black patients and the documented disparities in diagnosis and treatment access. A 2023 literature review in the journal Life catalogued the range of psychiatric disorders associated with hidradenitis suppurativa and explored their potential pathogenesis, concluding that the relationship is almost certainly bidirectional and biologically embedded rather than a simple byproduct of living with visible, painful lesions. By bringing retrospective cohort methodology and real-world data to bear, the new research letter provides an empirical test of what had been largely a hypothesis grounded in mechanistic plausibility and clinical observation.

The real-world data approach deserves particular emphasis, because it addresses a persistent weakness of the hidradenitis suppurativa literature. Randomized trials in the field, including those that established biologics such as TNF-alpha and IL-17 inhibitors as mainstay therapies, enroll selected patients under controlled conditions, and their findings do not always translate cleanly to the heterogeneous populations seen in routine practice. Recent real-world studies, such as 2025 evaluations of biologic therapy effectiveness published in the Australasian Journal of Dermatology, have demonstrated both the value and the limitations of translating trial results into everyday clinical care, including nuances in lipid profiles and treatment safety captured only in broader cohorts. A retrospective cohort built on real-world data captures patients of all disease severities, comorbidity profiles, and demographic backgrounds, offering a view of the depression-hidradenitis axis that reflects the population as it actually presents to clinicians rather than as it appears in protocol-driven trials.

For clinicians, the implications of a depression-to-hidradenitis risk pathway would be considerable. Dermatologists managing patients with early or suspected hidradenitis suppurativa routinely screen for psychiatric comorbidity, and European S1 guidelines for the disease’s treatment explicitly recommend attention to quality of life and psychological burden as part of comprehensive care. But if depression is also a risk factor, the screening logic inverts: psychiatrists and primary care physicians treating depressed patients, particularly those with inflammatory comorbidities, obesity, or smoking, might reasonably maintain a heightened index of suspicion for early follicular inflammation in intertriginous areas, enabling diagnosis before the disease progresses to painful scarring and sinus tract formation. Early intervention matters enormously in this disease, since treatments ranging from wound care and antibiotics to biologics and surgery are far more effective before irreversible structural damage occurs. The findings also raise provocative questions about whether effective depression treatment could modify hidradenitis risk, an intervention trial that no one has yet conducted but that the current study’s results would seem to justify.

The authors are careful to frame their work within the constraints of the retrospective design. Observational cohort data can establish temporal sequence and statistical association, but cannot by itself prove causation; unmeasured confounders, including shared genetic susceptibilities, medication effects, and healthcare utilization patterns, may partly explain the observed relationship. The research letter format likewise signals a concise, focused analysis intended to stimulate further work rather than to settle the question definitively. Both authors contributed to writing the manuscript, with Basharat preparing the figure and table, and both reviewed and approved the final text. The authors declare no competing interests, and the data supporting the findings are provided within the manuscript itself. Correspondence for the study is directed to Javed Iqbal in Stony Brook’s Department of Neurobiology and Behavior.

Nevertheless, the study lands at a moment when the broader concept of the mind-skin axis is gaining scientific respectability. Psychodermatology, once a niche corner of both dermatology and psychiatry, now commands growing attention as immunologic research reveals the molecular common ground between mental states and skin inflammation. The inflammatory hypothesis of depression has prompted trials of anti-inflammatory agents as antidepressant adjuncts; conversely, dermatologists increasingly recognize that calming systemic inflammation can lift mood. Hidradenitis suppurativa, with its uniquely severe psychiatric comorbidity burden and its cytokine biology so clearly intertwined with the inflammatory signature of depression, may prove to be one of the clearest natural laboratories for studying this bidirectional relationship. If future prospective studies confirm that depression accelerates or precipitates the disease, the Standard of care could expand to include collaborative, multidisciplinary management in which mental health treatment is viewed not only as supportive care but as a genuine component of dermatologic prevention. For the millions of patients who endure this condition in silence, often for years before diagnosis, the recognition that their psychological suffering and their skin disease are two faces of a single inflammatory biology represents both scientific progress and long-overdue clinical empathy.

The significance of this research extends beyond the academic realm, as it shines a light on crucial sociodemographic factors that may moderate the effects of childhood maltreatment on eating behaviors. Understanding these influences is vital for developing targeted interventions. The research delves into the nuanced relationships between various forms of maltreatment and the subsequent trajectory of disordered eating, emphasizing the necessity of a comprehensive approach in addressing these complexities.

In a detailed examination of the longitudinal data, the researchers employed advanced analytical techniques to dissect the patterns of disordered eating behaviors. Their findings suggest that individuals who experienced maltreatment during childhood are significantly more likely to develop these behaviors later in life. This correlation raises alarm bells for health practitioners and policymakers, as early detection and intervention could mitigate the long-term consequences faced by these individuals.

One of the compelling aspects of the study is its focus on sociodemographic moderators, which include factors such as gender, socioeconomic status, and ethnicity. By incorporating these moderators into their analysis, the researchers provide a more nuanced understanding of how different groups may experience the impacts of childhood maltreatment differently. For instance, preliminary results indicated that women may be more susceptible to developing disordered eating behaviors post-maltreatment than their male counterparts, urging the need for gender-sensitive approaches in treatment and prevention programs.

Moreover, the authors conducted behavior-specific sensitivity analyses, further enriching the study’s findings. By closely examining the different types of disordered eating behaviors—ranging from anorexia and bulimia to binge eating disorders—they outlined how specific maltreatment experiences are tied to particular behavioral outcomes. This granularity of analysis paves the way for tailored therapeutic approaches, as different types of disordered eating may require distinct intervention strategies.

The implications of these findings are profound. Health professionals and mental health practitioners must be aware of the potential long-term consequences of childhood maltreatment on eating behaviors. This knowledge can inform practices when assessing at-risk populations and guide the development of preventive programs aimed at children who are currently experiencing maltreatment. Creating a multi-faceted support system for these children, incorporating nutritional education, psychological support, and community resources, may prove essential in breaking this cycle.

Furthermore, the research raises ethical questions about how society addresses childhood maltreatment. A multi-disciplinary approach involving educators, healthcare providers, and policymakers could foster a richer environment for prevention and treatment. Collaborative efforts can mobilize community resources and elevate public awareness about the risks of maltreatment and the associated negative health outcomes, including disordered eating behaviors.

As we look forward, the potential for further research in this area is immense. Researchers can explore additional community and environmental factors influencing the effects of childhood maltreatment. For instance, studies might examine the role of social support systems and family dynamics in mitigating or exacerbating the impacts of early adverse experiences. Such explorations could provide deeper insights into the complexities surrounding childhood maltreatment and disordered eating behaviors.

The study by Modjarrad et al. underscores the urgent need for ongoing dialogue about childhood maltreatment and its long-lasting effects. As society evolves, so too must our approach to understanding and addressing these critical issues. By fostering an integrative perspective that considers the interplay of maltreatment experiences and sociodemographic factors, we can work toward more effective solutions to prevent disordered eating behaviors from manifesting.

In conclusion, this research serves as a vital reminder of the importance of considering childhood experiences in discussions about eating disorders. By recognizing the far-reaching impact of childhood maltreatment, we can better support individuals on their journey to recovery. The findings offer hope that through targeted interventions and increased awareness, future generations can break free from the cycle of maltreatment and its associated negative consequences on health and well-being.

Ultimately, it is through this comprehensive understanding that we can lay the groundwork for more effective policies and practices, sparking significant change for those who are most vulnerable. As new insights from this study take hold, the potential for improved intervention strategies becomes ever more promising, guiding us toward a healthier and more informed society.

This study serves as a clarion call for researchers and practitioners alike to continuously evaluate and refine our understanding of how childhood experiences shape eating behaviors across the lifespan. As we familiarize ourselves with these insightful findings, we can hope for a future where children are protected from maltreatment, and healthier patterns of eating and emotion regulation are fostered.

Subject of Research: Childhood maltreatment and its impact on disordered eating behaviors.

Article Title: Childhood maltreatment and longitudinal trajectories of disordered eating behaviors: sociodemographic moderators and behavior-specific sensitivity analyses.

Article References: Modjarrad, L., Marlow, N., Bollinger, A. et al. Childhood maltreatment and longitudinal trajectories of disordered eating behaviors: sociodemographic moderators and behavior-specific sensitivity analyses. J Eat Disord 13, 159 (2025). https://doi.org/10.1186/s40337-025-01355-2

Image Credits: AI Generated

DOI:

Keywords: Childhood maltreatment, disordered eating behaviors, sociodemographic factors, longitudinal study, intervention strategies, mental health.

As governments worldwide implemented safety measures, such as social distancing and mask mandates, a pertinent question emerged: how does a person’s experience with COVID-19—whether mild or severe—affect their mental state and overall fear of the virus? This study specifically focused on individuals’ encounters with infection, both personally and among family members, using data compiled from a comprehensive longitudinal Internet survey spanning three years, from 2020 to 2022. This innovative approach provided a thorough examination of fear of infection over time, allowing researchers to develop a nuanced understanding of psychological responses to COVID-19.

The researchers found that not just the occurrence of infection but also the severity of symptoms significantly influenced fear levels. Surprisingly, individuals with mild COVID-19 symptoms reported decreased levels of fear, suggesting that some degree of familiarity might mitigate anxiety. Conversely, those who experienced severe symptoms or had close family members endure severe illness reported heightened fear. This dichotomy highlights the complex interplay between personal experience and psychological response, suggesting that severity—rather than mere infection—plays a crucial role in shaping one’s mental health landscape.

Additionally, the study indicated demographic factors such as sex, age, and previous respiratory health conditions also contributed to variations in fear levels. For instance, younger individuals and females displayed higher levels of fear compared to older adults and males. This disparity underscores the importance of considering demographic variables when assessing psychological impacts during a health crisis. Understanding these differences can help inform targeted mental health strategies during future pandemics.

Moreover, the researchers tracked trends in fear over the study period. Their findings revealed a notable decrease in fear across the population as time progressed, indicating that anxiety around COVID-19 may lessen with familiarity and adaptation to the ongoing crisis. However, this trend was not uniform; those with severe experiences of the virus continued to exhibit elevated fear levels. Thus, while some may acclimate, others may require additional support to navigate their fears, particularly those who have been heavily impacted by COVID-19.

The implications of the study stress the necessity of tailored mental health support strategies. For individuals experiencing severe symptoms, mental health professionals should focus on providing reassurance and coping mechanisms to alleviate undue fear. In contrast, those recovering from mild cases may benefit from educational initiatives to reinforce infection prevention behaviors, promoting a proactive approach towards maintaining health and safety.

Furthermore, this research resonates with other global studies investigating the psychosocial ramifications of the pandemic. Various studies continually emphasize the need for integrated health responses that encompass both physical and mental health considerations. Policymakers and healthcare providers must work collaboratively to develop comprehensive frameworks that address these challenges, ensuring that mental health support is an integral component of pandemic response strategies.

In conclusion, as we grapple with the ongoing realities of COVID-19, this study sheds light on the profound relationship between personal experiences of infection and fear responses. It emphasizes the need for an empathetic, informed approach to mental health during health crises, ensuring that treatment and support structures are responsive to the diverse experiences of individuals.

Moving forward, continued research will be vital in understanding the evolving psychological landscape as the pandemic continues to unfold. By focusing on these nuanced factors, future interventions can be designed to diminish fear associated with infectious diseases and enhance the resilience of communities worldwide.

The authors of this study, supported by reputable grants, invite further exploration into the intricate dynamics of disease experience, mental health, and social behavior in assisting individuals during similar health crises.

Subject of Research: The psychological effects of COVID-19 infection experiences on fear levels.
Article Title: Exploring the relationship between personal and cohabiting family members’ COVID-19 infection experiences and fear of COVID-19: A longitudinal study based on the Japan COVID-19 and Society Internet Survey (JACSIS).
News Publication Date: 20-Dec-2024.
Web References: Institute of Medicine, BMJ Open DOI.
References: Study supported by the Japan Society for the Promotion of Science (JSPS) grants.
Image Credits: Not specified.

Keywords: COVID-19, fear, mental health, infection experience, psychological response, public health, Japan.