This form occurs most often in boys older than 8, large joints of lower extremities are commonly affected; characteristically, it causes back pain, and is linked to ankylosing spondylitis and inflammatory bowel disease.
This form occurs most often in boys older than 8, large joints of lower extremities are commonly affected. It causes back pain. This is characteristically. It is linked to ankylosing spondylitis and inflammatory bowel disease. This was characteristically.