Lupus is a type of autoimmune disease. Such diseases cause the immune system to attack the body. Lupus can result in widespread damage to your joints, tendons, and organs. It most often affects the heart, lungs, kidneys, and brain.
Symptoms of lupus may be mild to severe. They also often come and go. These flares can cause fever, rashes, inflammation of the joints, hair loss, and mouth ulcers. The disease can also lead to more serious symptoms. These include kidney disease, nerve problems, and weight loss.
Pregnancy may or may not increase the symptoms of, or change the course of, lupus. Flares may occur at any time in pregnancy or after you have the baby. But they are usually mild. During a flare, your body is more vulnerable to damage from the disease. Lupus can also make other health problems more likely to happen during pregnancy.