Why autoimmune diseases mostly strike women and are often misdiagnosed - Report - MDSpire

Why autoimmune diseases mostly strike women and are often misdiagnosed

  • By

  • Lauran Neergaard

  • November 6, 2025

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Clinical Report: Gender Disparity and Diagnostic Challenges in Autoimmune Diseases

Overview

Autoimmune diseases disproportionately affect women, with about 80% of patients being female. Diagnosis is challenging due to overlapping and vague symptoms, often requiring multiple tests and specialist consultations. Emerging research highlights new triggers and potential treatments, including CAR-T therapy and insights into viral links such as Epstein-Barr virus.

Background

Autoimmune diseases occur when the immune system mistakenly attacks the body's own tissues, affecting various organs and systems. They range from mild to life-threatening and include conditions like rheumatoid arthritis, lupus, and multiple sclerosis. Women are at significantly higher risk, possibly due to hormonal influences and genetic factors related to the X chromosome. Diagnosis is often delayed because symptoms mimic other diseases and require exclusion of alternative causes.

Data Highlights

Women represent approximately 80% of autoimmune disease patients. The global market for autoimmune disease treatments is valued at $100 billion annually. Epstein-Barr virus infection is nearly universal by young adulthood, yet only a small fraction develop lupus, indicating complex disease triggers. VEXAS syndrome, a severe autoimmune condition, predominantly affects men over 50.

Key Findings

  • Autoimmune diseases affect tens of millions globally and can impact nearly every organ system, including the brain.
  • Diagnosis is complicated by nonspecific, overlapping symptoms and often requires multiple tests and specialist input.
  • Women are disproportionately affected, accounting for about 80% of cases, potentially due to hormonal and genetic factors.
  • Environmental triggers such as infections (e.g., Epstein-Barr virus), smoking, and pollutants can initiate autoimmune disease in genetically susceptible individuals.
  • New therapies like CAR-T cell treatment show promise by targeting and resetting the immune system, moving beyond symptom management.
  • Certain populations, including Black and Hispanic women, have higher risks for specific autoimmune diseases like lupus.

Clinical Implications

Clinicians should maintain a high index of suspicion for autoimmune diseases in patients, especially women presenting with vague or overlapping symptoms. Early recognition and diagnosis can be improved by awareness of updated guidelines and emerging biomarkers. Novel treatments targeting immune system reprogramming may offer improved outcomes beyond traditional immunosuppression.

Conclusion

Autoimmune diseases present significant diagnostic and therapeutic challenges, compounded by gender disparities and complex triggers. Advances in understanding immune mechanisms and novel therapies herald a promising era for improved patient care.

References

  1. Associated Press Health and Science Department -- Understanding the Gender Disparity and Diagnostic Challenges in Autoimmune Diseases

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