Dysfunction in the sacroiliac joint, also called the SI joint, can sometimes cause lower back and/or leg pain. Leg pain from sacroiliac joint dysfunction can be particularly difficult to differentiate from radiating leg pain caused by a lumbar disc herniation (sciatica) as they can feel quite similar.
Systemic lupus erythematosus (SLE), also known simply as lupus, is an autoimmune disease in which the bodyâs immune system mistakenly attacks healthy tissue in many parts of the body. Symptoms vary between people and may be mild to severe.
Lupus erythematosus may manifest as systemic disease or in a purely cutaneous form also known as incomplete lupus erythematosus. Of these, systemic lupus erythematosus (also known as SLE) is the most common and serious form. Signs and symptoms[edit] Symptoms vary from person to person, and may come and go.