Maddie saw her Pediatric Rheumatologist at Rady Children's Hospital on Friday. We explained her recent flair and the persistent heel pain. Apparently this enthesitis, as it is called, is not uncommon in children with a B27 arthritis. It occurs due to inflammation of a muscle's tendon at its insertion site on bone. Maddie's heels start hurting after walking too much. It is especially painful walking home from school. There isn't anything we can do for the pain, other than give her Naproxen. The doctor is sending us to the lab for lots of blood work including a DNA test. Maddie still hasn't been tested for HLA-B27. I requested that she get the test just so we know for sure if our arthritis is genetically linked.