Lupus erithematosus is a name given to a collection of autoimmune diseases, in which the human immune system becomes hyperactive and attacks normal, healthy tissues. Symptoms of these diseases can affect many different body systems, including joints, skin, kidneys, blood cells, heart, and lungs.
Lupus erythematosus may manifest as a systemic disease or in a purely cutaneous form. Lupus has four main types:
Of these, systemic lupus erythematosus (also known as SLE) is the most common and serious form.