Why Women Are More Likely to Be Misdiagnosed

The data on misdiagnosis is one of the more uncomfortable bodies of evidence in contemporary medicine. Women are more likely than men to receive incorrect initial diagnoses across a wide range of conditions, more likely to have their symptoms attributed to psychological causes when physical causes are present, and more likely to wait longer for accurate diagnosis once a serious condition is suspected. The pattern has been documented in peer-reviewed research for over three decades. The pattern has been slow to change. 

A 2019 study published in the Journal of General Internal Medicine analyzed diagnostic outcomes across more than 100,000 emergency room visits and found that women were 30 percent more likely than men to be misdiagnosed when presenting with symptoms of stroke, and 50 percent more likely to be misdiagnosed when presenting with symptoms of heart attack. The misdiagnoses were not minor errors. They included cases in which women were sent home with prescriptions for anxiety medication while experiencing active cardiac events, and cases in which women were told their stroke symptoms were stress-related until subsequent imaging revealed the damage. 

The diagnostic gap extends well beyond emergency medicine. Research published in the Lancet in 2020 examined diagnosis times for 770 different conditions and found that women received later diagnoses than men for 700 of them. The gap was largest for cancer and metabolic disorders, where women waited an average of 2.5 years longer for diagnosis. For autoimmune diseases, which affect women at four times the rate of men, the average time to accurate diagnosis is currently between four and five years, during which time most patients see multiple physicians and receive multiple incorrect diagnoses before the autoimmune condition is identified. 

The reasons for the diagnostic gap have been the subject of significant research, and a clear picture has emerged. The gap is not the result of women being inherently more difficult to diagnose, though that explanation has been offered in medical literature for decades. The gap is the result of several documented factors operating in combination. 

The first factor is the historical absence of women from medical research. Until 1993, women of childbearing age were routinely excluded from clinical trials in the United States, on the grounds that hormonal variation made female subjects less convenient to study. The result is that for many medications still in use today, the dosing guidelines, side effect profiles, and efficacy data were developed primarily from male subjects. The Food and Drug Administration's 2001 review of drugs withdrawn from the market between 1997 and 2000 found that eight of the ten drugs posed greater health risks for women than men, largely because women had not been adequately represented in the original trials. The underrepresentation has improved since the early 1990s, but the foundational medical knowledge that current physicians were trained on remains heavily skewed toward male physiology. 

The second factor is the male-pattern presentation of disease that medical education has traditionally emphasized. The classic symptoms of heart attack that most physicians learn during training, including crushing chest pain radiating down the left arm, describe the male presentation. Women experiencing heart attacks frequently present with different symptoms, including jaw pain, nausea, fatigue, shortness of breath, and pain between the shoulder blades. These symptoms are real cardiac signals in women, but they do not match the textbook description that physicians have been trained to recognize. Women presenting with these symptoms are routinely told they are experiencing anxiety, indigestion, or fatigue from overwork, while their cardiac event proceeds untreated. 

The same pattern holds across other conditions. Stroke symptoms in women often include more nonspecific presentations than the classic facial droop and arm weakness that physicians have been trained to identify. Autoimmune diseases in women frequently present first as fatigue, joint pain, and cognitive changes that physicians have been trained to interpret as depression or stress. Endometriosis, which affects approximately one in ten women, has an average diagnostic delay of seven to ten years, in part because the severe pelvic pain that defines the condition has been culturally framed as normal female experience that women should accept rather than as a treatable medical condition. 

The third factor is documented bias in how physicians interpret women's reports of pain and symptoms. A 2018 meta-analysis published in the Journal of Pain examined how clinicians responded to identical pain reports from male and female patients and found that women's pain was significantly more likely to be attributed to emotional or psychological causes, while men's pain was more likely to be investigated as physical in origin. The same study found that women received pain medication less frequently and in lower doses than men presenting with comparable symptoms. The pattern held across emergency rooms, primary care settings, and specialty clinics. 

This bias has direct diagnostic consequences. When physicians attribute symptoms to psychological causes, they often discontinue the diagnostic workup that would identify physical causes. Women who present with fatigue, cognitive changes, and joint pain are frequently prescribed antidepressants without further investigation, while these same symptoms in men prompt referrals to rheumatologists, neurologists, and endocrinologists. The autoimmune disease that produces those symptoms in both sexes is identified more quickly in men because the diagnostic process continues, and is identified later in women because the diagnostic process stops at the psychiatric prescription. 

The fourth factor is the underrepresentation of women in medical leadership and academic medicine. While women now make up approximately half of medical school graduates in the United States, they remain underrepresented in senior leadership positions, in department chairs, in clinical trial leadership, and in the editorial boards of major medical journals. The research agendas, training curricula, and clinical guidelines that shape medical practice are still disproportionately set by men. This is not an argument that male physicians cannot diagnose women accurately. It is an observation that the structures determining what gets studied, taught, and prioritized have been built around a particular set of assumptions that have not adequately incorporated women's experiences as patients. 

The fifth factor, and one of the more recent additions to the research literature, is the documented influence of race and ethnicity on diagnostic outcomes for women. Black women in the United States are significantly more likely than white women to have their pain dismissed, their symptoms attributed to psychological causes, and their conditions misdiagnosed. The maternal mortality rate for Black women in the United States is currently three to four times higher than for white women, and a substantial portion of this disparity has been linked to physicians dismissing the symptoms Black women report during pregnancy and childbirth. The 2019 death of Dr. Susan Moore, a Black physician who documented her own substandard care in an Indiana hospital before dying of COVID-19, brought renewed public attention to a pattern that researchers in the field have been documenting for decades. The intersection of race and gender in medical diagnosis produces compounded disparities that affect women of color most severely and that single-axis analysis of gender bias has been slow to capture. 

What can patients do about a pattern that is structural rather than individual. The research on patient self-advocacy provides several evidence-based approaches that have been shown to improve diagnostic outcomes for women. 

The first is keeping detailed symptom records. Studies have shown that patients who arrive at appointments with written documentation of their symptoms, including dates of onset, frequency, severity, and contributing factors, receive more thorough diagnostic evaluation than patients who describe their symptoms verbally during the appointment. The written record functions as evidence in a clinical encounter that often does not allow time for full verbal explanation, and it provides specific data that is harder to dismiss than general descriptions. 

The second is being explicit about the impact of symptoms on daily life. Research on physician decision-making has found that clinicians take symptoms more seriously when patients describe specific functional impairments, such as inability to climb stairs, work at usual capacity, or perform routine household tasks. General descriptions of feeling unwell are more easily attributed to psychological causes than specific descriptions of physical limitation. 

The third is asking direct questions about what conditions are being ruled out and what tests would be required to rule them out definitively. Patients who ask, for example, whether the workup has included tests to rule out thyroid disease, autoimmune conditions, or cardiovascular issues receive more comprehensive evaluation than patients who do not ask. The questions function as prompts for the diagnostic process and reduce the likelihood that the workup will stop prematurely. 

The fourth is seeking second opinions when initial diagnoses do not match the patient's experience of her symptoms. The research on diagnostic accuracy consistently shows that second opinions identify previously missed diagnoses in 20 to 30 percent of cases involving complex symptoms. The pattern is particularly strong for autoimmune conditions, gynecological conditions, and cardiovascular conditions, where women have been documented to face the longest diagnostic delays. Patients should not assume that an initial diagnosis is necessarily accurate, particularly when the diagnosis does not adequately explain their symptoms or when treatments based on the diagnosis are not producing expected results. 

The fifth is changing physicians when the clinical relationship is not productive. Studies have shown that patients who change physicians after experiencing dismissal of their symptoms often receive accurate diagnoses from subsequent providers. The continuity of care that the medical system encourages is valuable when the clinical relationship is functional, but it becomes harmful when the relationship has settled into a pattern of dismissal. Patients should not interpret loyalty to a particular physician as a higher value than their own accurate diagnosis. 

The structural reform of medical practice to address diagnostic disparities is ongoing and slow. Some progress has been made. Sex-disaggregated reporting of clinical trial results is now required for federally funded research. Medical schools have begun incorporating sex and gender differences into diagnostic training. Research funding for conditions that disproportionately affect women has increased, though it remains disproportionately low relative to disease burden. These changes will eventually reduce the diagnostic gap, but the timeline for that reduction is measured in decades rather than years. 

In the meantime, the patient remains the most important advocate for her own accurate diagnosis. The advocacy required is significant, and it is not equally available to all women. Patients with educational resources, supportive family members, financial means to seek second opinions, and time to manage their own care are better positioned to navigate a system that has documented diagnostic biases against them. Patients without those resources face the same biases with fewer tools to address them. This is not a circumstance that individual self-advocacy can fully correct. It is a structural problem that requires structural solutions, and the structural solutions are arriving slowly. 

What women can do is approach the medical system with informed awareness of how it has been documented to function for patients like them. The awareness is not paranoia. The awareness is preparation. The patient who understands that her symptoms may be dismissed, that her pain may be underestimated, that her diagnostic workup may stop prematurely, is better equipped to push back when those things begin to happen. The pushing back is not always successful. It is more often successful than acquiescence. The data supports the pushing back. The data supports the patient. 

The diagnostic gap is real. The diagnostic gap is documented. The diagnostic gap will continue to affect women's health outcomes until the medical system reforms itself adequately to close it. Patients navigating the system in the meantime are operating in conditions that have been measured and reported on, and the measurement is itself useful. The patient who knows the gap exists is not imagining what she is experiencing when her symptoms are dismissed. She is encountering a documented pattern. Knowing this can help her respond to it more effectively, advocate for herself more confidently, and locate the providers and second opinions who are more likely to provide the diagnostic accuracy she needs. 

Her health depends on the system improving. Her health also depends, in the meantime, on her ability to navigate the system as it currently is. Both things are true. The improvement of the system is the work of generations. The navigation of the current system is the work of every woman who needs accurate medical care now.