Lupus, technically referred to as systemic lupus erythematosus, is an autoimmune disease in the body’s defense mechanisms mistakenly attacks healthy tissue in any of the body. Symptoms vary between people and might be mild to severe.
No one is sure what causes lupus, but doctors do know that the symptoms emerge when your immune system is not working as it should.
Your immune system cells that are supposed to protect the body from different germs start treating normal, healthy cells like invaders, attacking them and causing flare-ups that can affect the joints, kidneys, and almost any other system in the body.
No clear symptoms
Symptoms of lupus vary from person to person, from severity to the body parts affected. Some of the most common signs of lupus are rash and joint pain, according to rheumatologists. Symptoms can also include fatigue, hair loss, mouth sores, and fever.