Lupus is at tricky disease that can cause fever, pain, and a rash, but also can hurt the brain, the heart, and the kidneys.

Special kinds of cells, called immune cells, defend your body against strangers like bacteria and viruses, which can cause an infection.

We need immune cells to stay healthy, but sometimes they get confused and attack the body, too. When problems are caused by this immune confusion, doctors call them autoimmune diseases.

Lupus is a kind of autoimmune illness that can make children and grown-ups feel sick. People living with lupus have times when they feel well, but other times when they need to go to a doctor or the hospital.

Luckily, there are many kinds of medicines which can help, but, so far, scientists have not found a cure.