Yes, men get lupus, but roughly 9 out of 10 people diagnosed are women

Lupus affects men, but it is much less common in men than in women. Men who develop lupus often face a delay in diagnosis because doctors and patients alike expect it to show up in women first. When men do get lupus, the disease tends to be more severe at the time of diagnosis, possibly because it goes unrecognized longer.

The reasons why lupus strikes women far more often than men are not fully understood. Hormones play a role — lupus flares often worsen around menstruation and pregnancy in women — but that does not explain the entire gap. Genetics, immune system differences, and possibly environmental triggers all contribute. The bottom line: lupus is a disease that affects both sexes, but recognizing it in men requires the same awareness it should get in women.

Key Takeaways

  • Men account for roughly 10 percent of lupus diagnoses, making it far less common in men than women but not rare.
  • Men with lupus often receive a diagnosis later than women because the disease is not suspected as readily in male patients.
  • When lupus is diagnosed in men, it frequently involves more organ damage at the time of diagnosis than in women.
  • The symptoms of lupus in men are the same as in women — joint pain, rashes, fatigue, fever — so the disease should be considered regardless of sex.

Why lupus is underdiagnosed in men

Lupus carries a reputation as a "women's disease," and that reputation costs men time. A doctor who sees a man with joint pain and fatigue may think of other conditions first — rheumatoid arthritis, Lyme disease, depression — before considering lupus. A man with a rash on his cheeks may not connect it to an autoimmune condition if no one mentions lupus as a possibility.

This delay in diagnosis matters. The longer lupus goes unrecognized, the more damage it can do to the kidneys, heart, and nervous system. Men who eventually receive a lupus diagnosis often have already developed complications that women with lupus might have caught earlier. The solution is straightforward: lupus should be on the list of possibilities for any patient — male or female — who presents with the combination of joint pain, unexplained rash, fever, and fatigue.

How lupus presents differently in men

The core symptoms of lupus are the same in men and women: joint and muscle pain, a butterfly-shaped rash across the cheeks and nose, extreme fatigue, fever, and sensitivity to sunlight. Some men report that their lupus affects the lungs or kidneys more prominently than it does in women, though this is not universal. Discoid lupus — a form that primarily affects the skin — appears in men at rates closer to those in women, suggesting that skin-limited disease may not follow the same sex-based pattern as systemic lupus.

Men with lupus are more likely to develop kidney involvement (lupus nephritis) at the time of diagnosis than women are. They also report higher rates of certain complications like blood clots and heart inflammation. Whether this reflects a more aggressive disease in men or simply the effect of delayed diagnosis remains unclear. What matters for a man with symptoms is that lupus should be tested for, just as it would be in a woman.

Hormones and why women are affected more often

Estrogen appears to play a role in why lupus strikes women more often. Women's lupus symptoms frequently worsen around menstruation, when estrogen levels shift. Pregnancy can trigger lupus flares in women who have the disease. Hormone replacement therapy has been linked to worsening lupus in some women. These patterns suggest that estrogen influences the immune system in ways that make lupus more likely or more active.

Men produce estrogen too, but in much smaller amounts. This hormonal difference may partly explain the sex gap in lupus rates. However, hormones are not the whole story. Genetic factors, differences in how male and female immune systems respond to triggers, and possibly sex-specific environmental exposures all play roles. The result is that lupus remains predominantly a disease of women, but men remain at real risk.

What men should know about getting tested

If a man has symptoms that could point to lupus — persistent joint pain without obvious injury, a rash that does not respond to typical treatments, unexplained fatigue that lasts weeks, or fever with no clear source — he should mention lupus to his doctor. The standard test is the antinuclear antibody (ANA) test, which screens for the antibodies that lupus produces. A positive ANA does not mean lupus is present, but it is the first step toward diagnosis.

A man with a positive ANA will typically be referred to a rheumatologist, a doctor who specializes in autoimmune diseases. The rheumatologist will order additional blood tests and review the patient's full medical history and symptoms to confirm or rule out lupus. This process is the same for men and women. The key difference is that a man may have to advocate for himself to get tested in the first place, because lupus may not be the first condition his primary care doctor considers.

Living with lupus as a man

Men with lupus take the same medications as women: corticosteroids to reduce inflammation, antimalarial drugs like hydroxychloroquine, and immunosuppressants in more severe cases. The goal of treatment is the same: control symptoms, prevent flares, and protect organs from damage. Men respond to these treatments at similar rates to women.

One difference some men report is social isolation. Lupus support groups and educational resources often center women's experiences — pregnancy planning, menstrual cycle tracking, hormone therapy decisions. A man newly diagnosed with lupus may feel that the disease is not "his" disease, even though it is. Seeking out a rheumatologist who has experience with lupus in male patients, and connecting with other men who have the disease, can help counter this sense of isolation.

Frequently Asked Questions

Can a man pass lupus to his children?

Lupus is not inherited in a straightforward way, but genetics do play a role. A man with lupus has a higher chance of having children who carry genetic risk factors for lupus, but carrying the risk does not mean the disease will develop. Environmental triggers and other factors also matter. Children of a parent with lupus should be aware of symptoms and mention family history to their doctors.

Does lupus affect men's fertility or sexual function?

Lupus itself does not typically cause infertility in men. Some medications used to treat lupus, particularly immunosuppressants, may affect sperm production or sexual function in some men. A man with lupus who is concerned about fertility or sexual side effects should discuss these issues with both his rheumatologist and primary care doctor, as medication adjustments may be possible.

Why do doctors miss lupus in men?

Lupus is so strongly associated with women that it often does not appear on a doctor's mental list of possibilities when evaluating a male patient. Additionally, men may be less likely to report symptoms like joint pain or fatigue, or to seek care for them, which delays diagnosis further. Raising lupus as a possibility — either as a patient or as a concerned family member — can speed up the diagnostic process.

Is lupus more serious in men than women?

Lupus is not inherently more serious in men, but men often have more organ damage at the time of diagnosis because the disease went unrecognized longer. Once diagnosed and treated, men and women with lupus have similar outcomes. Early diagnosis and consistent treatment matter more than sex in managing the disease.