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.
Systemic Lupus Erythematosus. SLE is a chronic (long-lasting) rheumatic disease which affects joints, muscles and other parts of the body. Lupus involves inflammation (the immune system's response to kill foreign agents, virus, bacteria). More than a quarter of a million people are affected by lupus.