If the prevalence (or frequency) of lupus is greater in women (nearly 90% of patients), 1 patient out of 10 is a man. Compared to women, some manifestations of the disease are a little more frequent such as seritis (inflammation of the pleura in the lungs and pericardium in the heart), kidney damage, hemolytic anemia, the presence of antiphospholipid antibodies. The forms that affect men are usually initially more severe with more frequent kidney involvement. Clinical experience seems to show that prolonged remissions may be more common in men than in women.